World leaders urged calm on Friday after Israel conducted a pre-dawn drone sortie over Iran following a cycle of tit-for-tat attacks that crossed an important red line that has for decades held the Middle East back from a major regional conflict.
There were tentative hopes late on Friday that the apparent strike attempt against an airbase near the city of Isfahan was sufficiently limited to fend off the threat of a bigger Iranian response and an uncontrolled spiral of violence between a nuclear power and a state with the capacity to develop nuclear weapons quickly.
