WASHINGTON, July 1 (Reuters) - U.S. President Donald Trump said on Monday Iran was playing with fire after Tehran said it had exceeded its limit for low-enriched uranium allowed under a 2015 nuclear deal with world powers.

Asked at a White House event if he had a message for Iran, Trump said he did not have a message, but Iran knew what it was doing and was “playing with fire.” (Reporting by Jeff Mason; Writing by Mohammad Zargham; editing by Grant McCool)