VIENNA (AP) — Representatives of three European countries threatening to reimpose U.N. sanctions on Iran over its nuclear program failed to agree with their Iranian counterpart Tuesday on how to avoid the measures days ahead of a deadline, a diplomat said.

The talks in Geneva among representatives of Britain, France and Germany -- known as the E3 -- and Iran “ended without a final outcome,” said the diplomat with knowledge of the meeting, speaking on condition of anonymity because they were not authorized to speak publicly about the sensitive discussions.

The diplomat said efforts would continue to search for a solution ahead of an E3 deadline at the end of this month to invoke the so-called “snapback mechanism” of the 2015 Iran nuclear deal over what the countries have deemed Iran's

See Full Page