The Trump administration has floated the idea of a second round of sanctions on Russia after its largest aerial attack on Ukraine's capital since the start of the war.

President Donald Trump walks out of the White House in Washington D.C., on Sunday. Speaking to reporters, he said he's considering a second round of sanctions on Russia for its attack on Kyiv. Photo by Samuel Corum/UPI UPI Secretary of the Treasury Scott Bessent attends the U.S. Open Tennis Championship in Arthur Ashe Stadium in Flushing Meadows, N.Y., on Sunday. He's expected to meet Monday with European economic officials. Photo by Corey Sipkin/UPI UPI A fire broke out at the Ukrainian government building in Kyiv following an overnight attack Sunday. Photo courtesy of the Ukrainian State Emergency Service UPI U.S. Treasury Secretary Scott Bessent said Sunday that collapsing Russia's economy would be the best way to bring Russian President Vladimir Putin to the negotiating table. Photo courtesy of the Kremlin Press Office UPI

Sept. 8 (UPI) -- The Trump administration has floated the idea of a second round of sanctions on Russia after its largest aerial attack on Ukraine's capital since the start of the war.

Speaking to reporters Sunday at Joint Base Andrews in Maryland, President Donald Trump decried the attacks on Kyiv, which killed four people, including a mother and her baby, the BBC reported. Trump said he was "not happy with the whole situation."

Asked by a reporter whether he was considering a second round of sanctions on Russia in response to Sunday's attacks, Trump said, "Yeah, I am."

He declined to give further details, but Treasury Secretary Scott Bessent told NBC on Sunday that the United States must partner with Europe to "collapse" Russia's economy. He called on European countries to impose sanctions on other nations that purchase oil from Russia.

...

"We are prepared to increase pressure on Russia, but we need our European partners to follow us," Bessent said during an appearance on Meet the Press.

He said the race now is between how long the Ukrainian military can hold off Russia and how long Moscow's economy can last. Collapsing Russia's economy, Bessent said, "will bring [Russian] President [Vladimir] Putin to the table."

Bessent is expected to meet Monday with economic representatives from multiple European countries, according to NBC News.

Trump suggested a second and third phase of sanctions on Russia on Wednesday, The Hill reported. At the time, a reporter asked him why he hadn't taken action against Putin.

"How do you know there's no action?" Trump responded. "Would you say that putting secondary sanctions on India -- the largest purchaser [of Russian oil] outside of China, they're almost equal -- would you say there's no action?

"That cost hundreds of billions of dollars to Russia. You call that no action? And I haven't done Phase 2 yet or Phase 3."