The president also threatened new measures to increase economic pressure on Russia as he grows more frustrated with Putin.

US President Donald Trump is trying again to end the war in Ukraine – not by targeting Russia, but by hitting the countries that buy Russia’s oil.

Russia has responded to President Trump’s new hardline Ukraine strategy with a mix of public dismissal and covert military escalation. -While former president Dmitry Medvedev mocked the US threat of secondary tariffs as a “theatrical ultimatum,

Second, Mr Trump says he will give Russia 50 days to end the fighting or face economic punishment, with America imposing secondary tariffs on any country that buys Russian exports, mostly its oil. Finally,

Kremlin figure, President Donald Trump’s image is changing inside Russia. It comes after Trump vowed further sanctions on the country if a peace agreement with Ukraine is not reached in 50 days. CNN’s Chief Global Affairs Correspondent is on the ground in Moscow with the analysis.

President Donald Trump gave Russia a 50-day window to agree to a ceasefire with Ukraine, but that’s not slowing down the Kremlin’s attacks. ABC News’ Ian Pannell reports from Kyiv.