If Trump walks away, or if Kyiv rejects a deal and keeps fighting with European support, it won’t necessarily mean “the collapse of Ukraine” although more people will almost certainly die if the U.S. pulls its air defenses and intelligence-sharing capabilities, Heisbourg said.

European and Ukrainian officials are concerned that U.S. President Donald Trump is about to use minor progress in peace talks as an excuse to leave the process, the Financial Times (FT) reported on April 28,

European officials fear that US President Donald Trump will soon withdraw from participation in peace talks between Kyiv and Moscow. It is expected that he may use minimal progress as an excuse to declare his mission accomplished,

President Donald Trump said on Tuesday he thinks President Vladimir Putin wants to stop Russia's war in Ukraine, despite recent attacks against the beleaguered nation.

President Trump "wants to see a permanent ceasefire first, to stop the killing, stop the bloodshed," press secretary Karoline Leavitt said.