Prime Minister Keir Starmer on Thursday said the Iran war must become a turning point for Britain after two decades of crises, and he promised to strengthen the country's economy and military to cope with a more "volatile and dangerous" world, Reuters reported. 

On Tuesday, U.S. President Donald Trump announced a ceasefire in the six-week-old Iran conflict, but there is no sign yet of Tehran lifting its near-total blockade of the Strait of Hormuz, which has caused the worst disruption to energy supplies in history.

Starmer said the crisis, which has already pushed up fuel prices in Britain and is expected to drive further inflation and economic disruption, had to become "a line in the sand" for the country.