Timeline of the nationwide protest movement that began at Columbia University

Columbia University announced on Monday that it has canceled its university-wide commencement ceremony because of disruptions caused by recent pro-Palestinian protests. Students will still be able to celebrate at a series of smaller, school-based graduation ceremonies this week and next.

The protest movement connected to the Israel-Hamas war began nearly three weeks ago at the Ivy League university in New York City. It has since swept college campuses nationwide, with more than 2,500 people arrested.

The university's large graduation ceremony was scheduled for May 15 on the college's main lawn, which is where a protest encampment was based until authorities dismantled it last week. University officials said the past few weeks have been “incredibly difficult” for the community, and that they decided to cancel the ceremony after discussing it with students.

A timeline illustrating how Columbia University became the driving force behind protests on college campuses across the country:

Students set up an encampment at Columbia University the same day university president Nemat Shafik is called for questioning before Congress. Shafik is heavily criticized by Republicans who accuse her of not doing enough to combat concerns about antisemitism on Columbia's campus. Allegations of antisemitism arose during pro-Palestinian protests against Israel's actions in the war in Gaza.

The public grilling session comes four months after a similarly contentious congressional hearing led to the resignations of two Ivy League presidents. Unlike her counterparts, who focused their responses on protecting free speech, Shafik strongly denounced antisemitism, saying it “has no place on our campus.”

New York City police are called to Columbia's campus to disband the protest encampment and arrest more than 100 protesters. Those detained include the daughter of Democratic U.S. Rep. Ilhan Omar, who a day earlier had questioned Shafik about the school's treatment of pro-Palestinian protesters.

The arrests, which New York Mayor Eric Adams says were requested by Columbia officials, garner national attention and inflame college protests nationwide. A day later, the University of Southern California announces that it has canceled the keynote commencement speech by filmmaker Jon M. Chu. USC had already disallowed its student valedictorian, who is Muslim, from speaking at the May 10 commencement.

In the coming days, pro-Palestinian encampments will be set up at the University of Michigan, the Massachusetts Institute of Technology and the University of North Carolina.

Columbia cancels in-person classes, and an encampment at New York University swells to hundreds of protesters. NYU officials call in police after warning the crowd to leave and says the scene has become disorderly. Police arrest dozens of protesters at NYU and at Yale University in New Haven, Connecticut. The gates to Harvard Yard in Cambridge, Massachusetts, are closed to the public.

President Joe Biden addresses the unrest and seeks to find a narrow middle ground by condemning “antisemitic protests,” adding that he also condemns "those who don’t understand what’s going on with the Palestinians.”

Columbia administrators set a new midnight deadline for protesters to clear the encampment. While some leave, others dig in and refuse to disband until the school agrees to stop doing business with Israel or any companies that support the latest Israel-Hamas war.

Elsewhere, police make more arrests on other university campuses. At the University of Texas at Austin, hundreds of local and state police — including some on horseback and holding batons — aggressively clash with protesters, pushing them off campus grounds, and arresting more than 30 people. At the University of Southern California, police peacefully arrest student protesters.

Columbia University students say they're at an impasse after exhaustive negotiations with administrators and they intend to continue their encampment until their divestment demands are met. That comes after hundreds of protesters have been arrested nationwide over the previous nine days. The school sends students an email saying that bringing back police “at this time” would be counterproductive.

Meanwhile, schools across the country where protests have taken root prepare to shut down encampments over reports of antisemitic activity and concerns the protests will mar upcoming commencement ceremonies.

Columbia makes good on its promise to suspend students who defy a 2 p.m. deadline to leave the encampment of more than 100 tents. Instead of vacating, hundreds of protesters remain, marching around the quad and weaving around piles of temporary flooring and green carpeting meant for graduation ceremonies that are scheduled to begin next week.

Around the country, the number of arrests at campuses nationwide approaches 1,000 as the final days of class wrap up.

Dozens of protesters take over Hamilton Hall on Columbia's campus, barricading entrances and hanging a “Free Palestine” banner from a window as administrators warn that they face expulsion for doing so. Protesters insist they will remain at the hall until the university agrees to three demands: divestment from Israel and companies supporting the war in Gaza, financial transparency and amnesty for protesters.

Hours later, New York City police carrying riot shields storm the building and clear dozens of people from it, sweeping the encampment on the campus as well. The action from city police came at the request of the university, according to a police statement.

Columbia cancels its university-wide commencement ceremony. The ceremony had been scheduled for May 15 on the south lawn of the Manhattan campus, where protest encampments were based for about three weeks before authorities dismantled them last week. Students will still be able to celebrate at a series of smaller, school-based graduation ceremonies this week and next. Those ceremonies will take place about 5 miles (8 kilometers) north at Columbia’s sports complex, officials said.

Students sit on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Student protesters move tents from the center of campus to entrance of Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Students protest where they camp outside the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Students protest where they camp outside the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Students protest where they camp outside the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Students protest where they camp outside the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Student protesters camp near the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

A student protester pulls up a crate filled with food and supplies from a balcony of Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

A student protester pulls up a crate filled with foot and supplies from a balcony of Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Student protesters camp near the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Student protesters camp near the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Benches and trash bins block the entrance to Hamilton Hall where some student protesters camped on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

A Student protestor drops trash in a bin where benches and trash bins block the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Benches and trash bins block the entrance to Hamilton Hall where some student protesters camped on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Student protesters react to the news that Brown University has agreed to hear a divestment proposal as they camp near the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

A student protester parades a Palestinian flag outside the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Student protesters camp near the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

A student protesters leans out a window of Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

Student protesters camp near the entrance to Hamilton Hall on the campus of Columbia University, Tuesday, April 30, 2024, in New York. Early Tuesday, dozens of protesters took over Hamilton Hall, locking arms and carrying furniture and metal barricades to the building. Columbia responded by restricting access to campus. (AP Photo/Mary Altaffer, Pool)

KYIV, Ukraine (AP) — Germany’s foreign minister arrived in Kyiv on Tuesday in the latest public display of support for Ukraine by its Western partners, although deliveries of promised weapons and ammunition from NATO countries like Germany have been slow and have left Ukraine vulnerable to a recent Russian push along parts of the front line.

Annalena Baerbock renewed Berlin’s calls for partners to send more air defense systems, as Russia pounds Ukraine with missiles, glide bombs and rockets. Germany is the second-biggest supplier of military aid to Ukraine after the United States.

Ukraine’s depleted troops are trying to hold off a fierce Russian offensive along the eastern border in one of the most critical phases of the war, which is stretching into its third year.

Germany recently pledged a third U.S.-made Patriot battery for Ukraine, but Kyiv officials say they are still facing an alarming shortfall of air defenses against the Russian onslaught.

The Kremlin's forces have used their advantage in the skies to debilitate Ukraine's power grid, hoping to sap Ukrainian morale and disrupt its defense industry.

Baerbock, accompanied by Ukrainian Energy Minister Herman Halushchenko, toured a thermal power plant in central Ukraine that was heavily damaged on April 11. In the plant’s scorched interior, workers of Centrenergo, a state company that operates the plant, were still scooping up rubble several weeks after it was hit.

Ukrainian President Volodymyr Zelenskyy said the Kremlin’s forces are still focusing their efforts on the eastern Donetsk province and northeastern Kharkiv region, where explosive-laden Russian glide bombs are wreaking destruction on military and civilian areas.

“This brings us back again and again to the need for air defense — for additional defense systems that could significantly mitigate the difficulties for our warriors and the threat to our cities and communities,” Zelenskyy said late Monday on social media.

Zelenskyy claimed Ukraine’s forces are still in control of the contested areas, though Russia says it has captured a series of border villages.

It was not possible to independently verify either side's battlefield claims.

Baerbock had planned to visit Kharkiv on Tuesday but the trip had to be called off for security reasons, German news agency dpa reported. Almost 11,000 people have been evacuated from Kharkiv border areas since Russia launched its offensive actions there on May 10.

A Russian overnight drone attack hit transport infrastructure in Kharkiv city, the regional capital, damaging over 25 trucks, buses, and other vehicles, regional Gov. Oleh Syniehubov said Tuesday. Seven people were injured, he said.

Ukraine’s general staff said the frequency of Russian attacks in Kharkiv slowed on Monday, though fighting continued.

Russian troops are also conducting reconnaissance and sabotage raids in Ukraine’s northern Sumy and Chernihiv regions, shelling border settlements and laying more minefields, according to Dmytro Lykhovii, Ukraine’s general staff spokesman. The front line is some 1,000 kilometers (620 miles) long.

Baerbock was due to meet with Ukrainian Foreign Minister Dmytro Kuleba in Kyiv. German Chancellor Olaf Scholz has been resisting appeals from Ukrainian officials to provide Taurus missiles, which are equipped with stealth technology and have a range of up to 500 kilometers (300 miles).

The German- and Swedish-made missiles would be able to reach targets deep in Russia from Ukrainian soil. But Berlin has balked at that prospect, saying that sending the missiles would bring a risk of it becoming directly involved in the war.

The restriction on not allowing Ukraine to fire at Russia has denied Kyiv the ability to strike at Russian troops and equipment massing for attacks on the other side of the border, a Washington-based think tank said.

“These U.S. and Western policies are severely compromising Ukraine’s ability to defend itself against current Russian offensive operations in northern Kharkiv (region) or any area along the international border where Russian forces may choose to conduct offensive operations in the future,” the Institute for the Study of War said in an assessment late Monday.

Baerbock said in a statement that Ukraine’s prospective membership of the European Union is “the necessary geopolitical consequence of Russia’s illegal war of aggression.”

Ukraine has made “impressive progress” and must not let up in reforms to the judicial system, in fighting corruption and on media freedom, she said.

Germany will host a reconstruction conference for Ukraine next month. Rebuilding the country is predicted to cost hundreds of billions of dollars.

Geir Moulson contributed to this report from Berlin.

Follow AP’s coverage of the war in Ukraine at https://apnews.com/hub/russia-ukraine

German's Foreign Minister Annalena Baerbock speaks to Ukrainian Energy Minister Herman Halushchenko during official visit to a thermal power plant which was destroyed by a Russian rocket attack in Ukraine, Tuesday, May 21, 2024. (AP Photo/Evgeniy Maloletka)

Police officers inspect the site of the Russian missile attack, with a dead body in the foreground, in the outskirts of Kharkiv, Ukraine, Sunday, May 19, 2024. The missile hit a recreation area, killing five including one pregnant, and injuring 16. (AP Photo/Andrii Marienko)

A woman cries as police officers inspect the site of the Russian missile attack that hit a recreation area killing five including one pregnant, injuring 16 in the outskirts of Kharkiv, Ukraine, Sunday, May 19, 2024. (AP Photo/Andrii Marienko)

Destroyed resort compound is seen from above after a Russian rocket attack near Kharkiv, Ukraine, Sunday, May 19, 2024. According to officials, several people were killed in this attack. (AP Photo/Evgeniy Maloletka)