Britain’s prime ministerial aspirant, Jeremy Hunt has promised to reverse cuts to the size of the Royal Navy if he becomes prime minister.
It comes after the Ministry of Defence said Iranian boats tried to impede a British oil tanker in the Gulf, before they were warned off by a Royal Navy ship.
Mr Hunt said events in the Gulf showed the navy needed more warships.
He has already pledged to boost defence spending by £15 billion over the next five years.
Mr Hunt’s leadership rival, Boris Johnson, has also committed to increasing the UK’s defence budget.