With Iran deal teetering on brink, Europeans assess next steps

The three powers, who are party to the deal alongside Russia and China, have sought to defuse the tensions, which culminated in a plan for U.S. air strikes on Iran last month that Trump called off at the last minute.

European foreign ministers will seek to flesh out how to convince Iran and the United States to reduce tensions and initiate a dialogue when they meet in Brussels on Monday amid fears that the 2015 nuclear deal is close to collapse. US-Iranian tensions have worsened since U.S. President Donald Trump decided last year to abandon the nuclear deal under which Iran agreed to curtail its atomic programme in return for relief from economic sanctions crippling its economy.