Bahrain’s diplomatic relations with Iran have been ruptured since Jan. 2016, a move the country made in solidarity with Saudi Arabia. Riyadh cut ties with Tehran after protesters in Iran stormed Saudi diplomatic facilities over its execution of dissident Saudi Shiite cleric Nimr Al-Nimr. While Saudi Arabia and Iran have this year been engaged in talks to repair relations, several outstanding issues lie at the heart of their dispute, most notably the conflict in Yemen...