Washington DC [US], March 11 (ANI): US President Donald Trump's special envoy Steve Witkoff said that Ukrainian President Volodymyr Zelenskyy apologised to Trump in a letter after an explosive public argument during an Oval Office meeting, The Hill reported.

'Zelenskyy sent a letter to the president. He apologized for that whole incident that happened in the Oval Office,' Witkoff said on Monday (local time), as p