Washington DC, Aug. 21 -- US President Donald Trump on Thursday (local time) hinted at allowing Ukraine to "fight back" against Russia, marking a departure from his earlier peace stance, as he said, "It is very impossible, if not impossible, to win a war without attacking an invading country."

Promising "interesting times ahead," Donald Trump criticised Joe Biden for not allowing Ukraine to "fight back" against Russia, calling the former US President "grossly incompetent" for his action, reiterating that the war would never have happened if he (Trump) was the President.

In a post on Truth Social, Donald Trump said, "It is very hard, if not impossible, to win a war without attacking an invader's country. It's like a great team in sports ...