Theresa May is to accuse Iran of “aggressive regional actions” in the Middle East, including stirring trouble in Iraq, Lebanon and Syria.
The Prime Minister will say she is “clear-eyed” about the threat posed by the country and will pledge to work with Gulf States to counteract its influence.
It follows a speech by Foreign Secretary Boris Johnson in which he sought to align British rhetoric more closely with that of the incoming administration of US President-elect Donald Trump.
Read more: Theresa May accuses Iran of ‘aggressive action’ in the Middle East