Trump said his latest call with Putin wouldn't lead to "immediate peace" as he relayed the Russian leader's plans to retaliate against Ukraine.

"It was a good conversation, but not a conversation that will lead to immediate Peace," President Trump posted on social media.

A night-time Russian missile and drone bombardment of Ukraine has killed at least 15 people and injured 156 others while they slept in their homes, local officials said. At least 14 people were killed as explosions echoed across the Ukrainian capital for almost nine hours during the night,

Trump has generally veered away from overtly criticizing Putin while openly berating Ukraine's leader Volodymyr Zelensky, but has repeatedly condemned Russia's lethal airstrikes and floated that the Kremlin could be "tapping us along."

The Russian leader briefed Trump on his recent talks with officials in Iran and Israel, and reiterated Moscow's proposal to seek mutual solutions on the Iranian nuclear issue.

World leaders had hoped to secure U.S. backing for tougher sanctions on Russia, which struck Ukraine with missiles and drones overnight.

President Donald Trump claimed Monday that the Russia-Ukraine war could have been avoided if Moscow was still a part of the G7 forum. Trump called Russia’s 2014 expulsion from the group a grave mistake and suggested that Putin would not have invaded Ukraine had Trump been in the White House four years ago.

Tehran has asked Qatar, Saudi Arabia and Oman to press U.S. President Donald Trump to use his influence on Israel to agree to an immediate ceasefire with Iran in return for Tehran's flexibility in nuclear negotiations,