Pakistan, March 4 -- US President Donald Trump has paused military aid to Ukraine following his clash with Ukrainian President Volodymyr Zelensky last week, a White House official said, deepening the fissure that has opened between the two one-time allies.

The move comes after Trump upended US policy on Ukraine and Russia upon taking office in January, adopting a more conciliatory stance towards Moscow - and after an explosive confrontation with Zelensky at the White House on Friday in which Trump criticised him for being insufficiently grateful for Washington's backing in the war with Russia.

"President Trump has been clear that he is focused on peace. We need our partners to be committed to that goal as well. We are pausing and review...