Iran-US tensions

Terror blacklist: On April 8, 2019 Washington declares Iran’s elite Revolutionary Guard Corps a “terrorist” group. Its Quds Force, which operates abroad, is also put on the blacklist. On May 5, White House national security adviser John Bolton announces the deployment of an aircraft carrier and a bomber task force to the Middle East.

Nuclear accord unravels: On May 8, a year after Washington unilaterally withdrew from an international 2015 deal curbing Iran’s nuclear programme and reimposed sanctions, Tehran warns it is prepared to resume nuclear activity. Trump announces new measures against Iran’s steel and mining sectors. On November 7, Tehran resumes uranium enrichment at its underground Fordo plant -- its fourth walkback from the 2015 nuclear accord.

Attacks on ships: On May 12, four ships, including three oil tankers, are damaged in mysterious attacks in the Gulf that the United States blames on Iran. Two tankers, Norwegian and Japanese, come under attack in the Gulf of Oman on June 13. Washington, London and Riyadh blame Iran, which denies involvement.

US drone shot down: Iran’s Revolutionary Guard says on June 20 it shot down a US drone which violated Iranian airspace near the Strait of Hormuz. Trump approves a retaliatory strike, but cancels it at the last minute.

Saudi oil attack: On September 14, aerial attacks claimed by Yemen’s Iran-backed Huthi rebels spark fires at two major Saudi oil facilities. Tehran is accused by the United States and other powers of being responsible but denies involvement.

US backs protesters: Iran is furious when the US expresses support for protesters who take to the streets on November 15 after a fuel price hike. The White House condemns Iran for using “lethal force”. Iran’s foreign ministry criticises “American economic terrorism”.