The Prime Minister said that Tehran's atomic programme was 'a grave threat to international security' after bombers dropped 30,000-pound 'bunker buster' bombs on the Fordow nuclear facility.

Donald Trump is keeping the world guessing about whether he will join Israeli attacks on Tehran's nuclear facilities.

The PM repeated his call for de-escalation in the region, saying concerns about Tehran's nuclear programme were best dealt 'by way of negotiations than by way of conflict'.