Washington, DC – The decision by European countries to impose “snapback” sanctions against Iran may further exacerbate international tensions, experts say, as fears of a regional war loom over the Middle East.On Thursday, Germany, France and the United Kingdom – Europe’s largest economies – triggered a 30-day process to reimpose sanctions over what they called “significant” violations of a 2015 agreement to limit Iran’s nuclear programme.“What we’re heading toward is the snapback scenario where the sanctions come back and Iran is likely to retaliate in some way that’s unhelpful,” said Ryan Costello, the policy director at the National Iranian American Council (NIAC).And the tensions could escalate into renewed violence after the Israeli attacks on Iran earlier this year. “It’s another kind of domino falling on the way toward the June war reigniting,” Costello said.The United States, which bombed three nuclear facilities in June as part of an Israeli assault on Iran, has welcomed the European countries’ move.But the administration of US President Donald Trump has also kept the door open for talks with Iran.“The United States remains available for direct engagement with Iran – in furtherance of a peaceful, enduring resolution to the Iran nuclear issue,” US Secretary of State Marco Rubio said in a statement. “Snapback does not contradict our earnest readiness for diplomacy, it only enhances it.”Costello, however, unde …