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.

In a dramatic turn of events, US President Donald Trump took to social media on Saturday to announce that India and Pakistan - after four tense days of cross-border clashes - had agreed to a "full and immediate ceasefire".

A fragile ceasefire was holding between India and Pakistan on Sunday, after hours of overnight fighting between the nuclear-armed neighbours, as U.S. President Donald Trump said he will work to provide a solution regarding Kashmir.