In response, Russia has launched a massive drone and missile strike on Ukrainian cities overnight into June 6. The Ukrainian air force said the attack on six Ukrainian regions used more than 400 drones and over 40 ballistic missiles. Several people were killed.

But halting progress, ever-more deadly drone attacks and unmoving negotiating positions seem to have taken their toll. On Thursday, Trump used a striking analogy to concede the warfare was nowhere near over, and that he did not, at that moment, feel it was best to intervene.

President Donald Trump said Thursday that it might be better to let Ukraine and Russia “fight for a while” before pulling them apart and pursuing peace, even as Germany's new chancellor appealed to him as the “key person in the world” who could halt the bloodshed by pressuring Vladimir Putin.

U.S. President Donald Trump sidestepped questions on June 5 as to when he can be expected to impose additional sanctions on Russia, as the Kremlin continues to reject a ceasefire in Ukraine.

Donald Trump dodged questions regarding the deadline for imposing further sanctions on Russia, as the Kremlin continues to reject a ceasefire in Ukraine. The American president has repeatedly threatened to impose sanctions on Russia if he doesn't see progress in peace talks between Kiev and Moscow.