US President Donald Trump has warned Iran of “big problems” if it resumes the nuclear programme it agreed to curb in a 2015 international accord.
Speaking at the White House as he hosts French President Emmanuel Macron, Mr Trump called the Iran deal “a disaster” and “insane”.
The US president has been threatening to reject an extension of the Obama-era nuclear pact by a 12 May deadline.
Mr Macron is in Washington lobbying Mr Trump to preserve the pact.