World leaders have urged peace and a return to talks following military strikes by the United States and Israel on Iran, which killed Iran's Supreme Leader, Ayatollah Ali Khamenei. Concerns were raised about whether the violence could spread across the region and tensions escalated with a massive explosion in the Iranian capital. Iran continued its retaliation campaign, with Qatar, Kuwait and Bahrain intercepting a barrage of missiles. The UK's Defence Minister, John Healey, stated that Iranian missile and drone strikes came within a few hundred yards (meters) of a group of 300 British military personnel in Bahrain and two missiles were fired towards Cyprus. The 22-nation Arab League called the Iranian attacks a blatant violation of the sovereignty of countries advocating for peace.