President Donald Trump floated "substantially" increasing trade with New Delhi and Islamabad following this weekend's cease-fire announcement.

India and Pakistan agreed to an immediate ceasefire on Saturday, unexpectedly halting the worst fighting in decades between the nuclear-armed neighbors, just when their tit-for-tat strikes appeared to be spiraling out of control.

US president offers to mediate between nuclear-armed neighbours days after his administration helps broker a ceasefire.