The Trump administration has been quietly hammering out a new peace plan with Russia to end its war with Ukraine, a person familiar with the talks told CNN.

Ukraine said it had successfully struck targets in Russia using U.S.-supplied ATACMS missiles, ending a months-long absence of the powerful weapon from the battlefield. In a statement shared on Facebook, the General Staff of the Armed Forces of Ukraine called it "an iconic event that emphasizes Ukraine's unwavering devotion to its sovereignty."

An explosion that damaged a Polish railway track on a route to Ukraine was an “unprecedented act of sabotage,” Prime Minister Donald Tusk said on Monday.

Ukraine launched US-supplied ATACMS missiles into Russian territory this week — the first confirmed strikes of their kind — after Washington quietly allowed Kyiv to use the long-range weapons for attacks across the border,

Ukraine has asked the Vatican to formalize its role facilitating negotiations for the return of Ukrainian children and civilians taken by Russia during the war.

Ukraine hasn't previously stated openly that it uses the advanced U.S.-provided ballistic missile systems on targets inside Russia.