After plans for a summit between Russian President Vladimir Putin and U.S. President Donald Trump were shelved, Ukraine is appealing to allies for more support in an effort to dial up the pressure on Russia.

At least six people were killed overnight, shortly after President Donald Trump announced that he did not "want to have a waste of time" holding a summit with the Russian leader.

There are no plans for President Donald Trump and Russian President Vladimir Putin to meet "in the immediate future," a White House official said on Tuesday -- calling off a summit that was expected in Hungary in the coming weeks.

Hungary's strongman leader Viktor Orbán calls Trump's announcement of a meeting with Putin in his country great news for "peace-loving people."

Donald Trump acknowledged it was “possible” Vladimir Putin was playing for time to find a way to end the war in Ukraine. “I’ve been played all my life, by the best of them,” Trump said when asked if he was concerned whether the Russian leader was playing for time.

President Donald Trump schedules call with Russian President Vladimir Putin as Ukraine seeks long-range Tomahawk missiles following recent Russian strikes on energy sites.