U.S. President Donald Trump | Mandel Ngan/AFP via Getty Images Trump extends Iran nuclear deal again ‘This is the last such waiver he will issue,’ says White House official.

President Donald Trump is once again extending the Iran nuclear deal, but “this is the last such waiver he will issue” unless the deal is strengthened by Congress and European allies, a senior administration official said Friday.

Trump faced a Friday deadline to decide whether to reimpose economic sanctions on Iran the U.S suspended as part of a 2015 nuclear agreement negotiated with Tehran by the Obama administration and five other nations.

Trump is designating 14 Iranian individuals and entities with new sanctions unrelated to the nuclear deal, including the head of Iran’s judiciary, the official said. But he also expects Congress and European nations, with whom the White House has been negotiating new provisions cracking down on Tehran, to take action before he faces another deadline for extending the deal, officials said.