Britain, France, and Germany have triggered the so-called snapback mechanism of the 2015 Iran nuclear deal to reinstate UN sanctions against Tehran. The European trio, known as the E3, wrote to the UN Security Council on August 28 to initiate the process, which takes 30 days. In a statement, the E3 foreign ministers said, "We will use the 30-day period to continue engaging with Iran regarding our extension offer or any meaningful diplomatic efforts to restore its compliance with commitments." They emphasized that they "share the fundamental objective…