Iran and Saudi Arabia must reopen their embassies to facilitate a rapprochement between the two regional rivals, a top adviser to Iran’s supreme leader said on Wednesday, amid moves by Tehran and Riyadh to revive ties. Iran – which has been rocked by weeks of anti-government protests \- and Saudi Arabia, the leading Shia and Sunni Muslim powers in the Middle East, severed ties in 2016 with both parties backing opposite sides in proxy wars across the region, from Yemen to Syria and elsewhere. “We are neighbours of Saudi Arabia and we must coexist. The embassies of the two countries should reope…