Trump calls Putin 'crazy,' warns of Russia's 'downfall'

While speaking with reporters in Washington, D.C., on Sunday night, President Donald Trump was asked about Russia’s overnight attacks on Ukraine.

Trump expressed his discontent with Russian President Vladimir Putin for killing people while they are in conversation and mentioned he is considering implementing more sanctions.

"I'm not happy with what Putin is doing. He's killing a lot of people, and I don't know what the hell happened to Putin. I've known him a long time. Always gotten along with him, but he's sending rockets into cities and killing people, and I don't like it at all," Trump said.

"We're in the middle of talking, and he's shooting rockets into Kiev and other cities. I don't like it at all," Trump added, going on to say he was "surprised" by the attacks.

Ukraine's air force said in a post to Telegram on Sunday that Russia launched a total of 367 "air attack vehicles" -- among them nine Iskander ballistic missiles, 56 cruise missiles, four guided air missiles and 298 attack drones -- at targets across the country.

The attack marks the fourth consecutive night during which Russia launched more than 100 missiles and drones into Ukraine, per Ukrainian air force figures.

The barrages came despite the beginning of a multi-day prisoner exchange process on Friday and ongoing U.S.-brokered peace talks.

Later, Trump was asked if he would consider more sanctions on Russia.

"Absolutely. He's killing a lot of people. I don't know what's wrong with him. What the hell happened to him, right? He's killing a lot of people and I'm not happy with that," Trump said.

-ABC News' Kelsey Walsh

In a post to Truth Social on Sunday, President Donald Trump announced that he agreed to an extension on the 50% tariffs on the European Union.

The new deadline has been set for July 9, Trump said.

The president's decision came after a phone call with Ursula von der Leyen, the president of the European Commission.

"I received a call today from Ursula von der Leyen, President of the European Commission, requesting an extension on the June 1st deadline on the 50% Tariff with respect to Trade and the European Union," Trump wrote.

"I agreed to the extension -- July 9, 2025 -- It was my privilege to do so," he added.

Secretary of Homeland Security Kristi Noem met with Israeli Prime Minister Benjamin Netanyahu at his office in Jerusalem on Sunday, according to a readout from Netanyahu's office.

"The Secretary of Homeland Security expressed great appreciation for the Prime Minister's policy of building the fence on the Egyptian border and conducting the war," the readout said.

The U.S.'s ambassador to Israel, Mike Huckabee, also attended the meeting.

-ABC News' Jordana Miller

Trump continued to rant about Harvard University's international students, claiming that some students come from countries that do not have the best interests of the United States in mind.

Trump questioned Harvard's transparency and demanded that it reveals its student identities and the countries of these students, especially given the financial support it receives from the government.

"We want to know who those foreign students are, a reasonable request since we give Harvard BILLIONS OF DOLLARS, but Harvard isn’t exactly forthcoming. We want those names and countries," Trump wrote.

The president's post comes days after his administration's move to revoke the school's ability to enroll international students. A court hearing to determine if the temporary block should be extended is scheduled for Thursday.

-ABC News’ Kelsey Walsh