Russia launched a wave of attacks on Ukraine on Tuesday, killing at least six people in overnight strikes that hit city buildings and energy infrastructure, while a Ukrainian attack in southern Russia killed three people and damaged homes, authorities said.

The large-scale attacks come during a renewed U.S. push to end the war that has raged for nearly four years and talks about a U.S.-brokered peace plan. Army Secretary Dan Driscoll met with Russian officials for several hours in Abu Dhabi on Tuesday, a U.S. official confirmed to The Associated Press.

Washington and Kyiv said that any eventual deal to halt the war with Russia must fully uphold Ukraine's sovereignty, after "constructive" talks between U.S., Ukrainian and European officials in Geneva.

Ukrainian President Volodymyr Zelensky on Monday hailed "important steps" after a Geneva summit with the U.S., but said more was needed to end a nearly four-year war following the Russian invasion.

U.S. Secretary of State Marco Rubio arrived in Geneva Sunday morning for discussions on a U.S. plan to end the Ukraine war, after Washington signalled room for negotiation on the controversial proposal.

Iran's intelligence ministry has warned of attempts by foreign adversaries, including the United States and Israel, to target supreme leader Ayatollah Ali Khamenei and destabilise the Islamic republic.

Ukraine scrambled Saturday to respond to a U.S. plan to end the war that includes many of Russia's hardline demands, with Kyiv saying it had discussed the next steps with several key European allies.

Iran has requested foreign assistance in extinguishing a large fire that has ravaged UNESCO World Heritage-listed forests in the north of the country for several days, local media reported on Saturday.

Months of sniping melted away Friday as New York's incoming leftist mayor Zohran Mamdani and President Donald Trump were all smiles at a White House meeting -- promising to set aside their feud and cooperate on the city's future.

President Volodymyr Zelensky said Friday that Ukraine has to confront the possibility of losing its dignity or risking the loss of a key partner as it figures out how to respond to a U.S. peace proposal to end Russia's war with his country.

"This is one of the most difficult moments in our history," Zelensky said in a video address to the nation. "Currently, the pressure on Ukraine is one of the hardest. Ukraine may now face a very difficult choice, either losing its dignity or the risk of losing a key partner."

Russia is looking to use the U.S. proposals to end the war in Ukraine to stall sanctions from Washington and EU talks on using Moscow's frozen assets to fund Kyiv, the bloc's top diplomat said Friday.