"We want to understand what is happening, why it's happening, and where all this is heading," Zelensky told a bipartisan group of U.S. senators and representatives.

"Russia, frankly, has been fine on Ukraine. They haven't been doing much," Trump said, hours after a Russian drone strike in a public park killed six people, including two children.

The conversation with Zelensky comes three days after the pope spoke with Russian President Vladimir Putin to call for a ceasefire to evacuate civilians from the front-line town.

Three military personnel and three personnel were injured and are receiving treatment. The gunman has been detained and investigation is underway.

"His country is in shambles, a large portion of his land is lost, his oceans and seas are gone, and his male population is low, wounded, and/or dead."

Several explosions rocked the capital just before 11 p.m., with further attacks around 3 a.m. and 7 a.m., Kyiv Independent journalists on the ground reported. Ukraine's State Emergency Service (DSNS) said damage was reported in at least three districts.

According to the president, the U.S. and Ukraine are in "constant communication" and are preparing their "next steps in diplomacy."

Russia's Federal Air Transport Agency announced restrictions at three of Moscow's four major airports, while the Transportation Ministry said the region's aviation operations were under "special monitoring."

"This deal won't lower costs for the American people, who are already paying for Trump's failed war of choice in Iran. It will hand Putin millions of dollars to continue slaughtering Ukrainian civilians with impunity."

Four sources familiar with the discussion said that Elon Musk approached U.S. President Donald Trump with the idea of slowing down Ukraine's Starlink service on the battlefield.

The city and surrounding region were targeted in an "intense" Russian attack that began late on Oct. 14, Governor Andrii Raikovych reported. The strike targeted local logistics, transportation, and industrial enterprises.