British Prime Minister Boris Johnson and French President Emmanuel Macron reiterated their commitment on Sunday to the Iran nuclear deal and agreed a long-term framework is needed, Downing Street said on Sunday.

"On Iran, the leaders reiterated their commitment to the JCPoA (Joint Comprehensive Plan of Action) and also acknowledged the need to define a long-term framework to prevent Iran from acquiring a nuclear weapon," a Downing Street spokeswoman said in a statement after the two met on the sidelines of a Libya summit in Berlin.

"They agreed on the importance of de-escalation and of working with international partners to find a diplomatic way through the current tensions."