Several countries, global bodies and prominent groups respond to the killing of Iran’s supreme leader, urging de-escalation. The killing of Iranian Supreme Leader Ali Khamenei in an attack by the United States and Israel has triggered sharp reactions across the world as leaders warn of escalation and regional instability. Iran said it has launched retaliatory strikes on Israel and US assets in Qatar, the United Arab Emirates, Kuwait, Bahrain, Jordan, Saudi Arabia, Iraq and Oman. Iran’s elite Islamic Revolutionary Guard Corps (IRGC) has pledged revenge, saying it has launched attacks on 27 bases in the Middle East where US troops are stationed. Several countries in the region have closed their airspace during the escalating exchange of attacks. A Gulf source told Al Jazeera that foreig...