Diplomats from Iran and the three European parties remaining in a moribund 2015 nuclear deal met in Istanbul on Friday, Iranian and British officials said, their first round of talks since the U.S. began nuclear talks with Tehran in April.

US President Donald Trump said on Thursday that Washington is “very close” to reaching a nuclear deal with Iran after Tehran “sort of” agreed to its terms.

President Trump indicated the U.S. was close to a deal in which Iran agrees to forgo nuclear weapons, sparking a selloff in oil prices. "You probably read today the story about Iran has sort of agreed to the terms,