Because of its delicate economic and diplomatic relationship with Libya, Italy has not been involved in NATO military strikes in that country, until now. Premier Silvio Berlusconi, agreeing with US President Barack Obama that Italy do its part in the war in Libya, approving air strikes to help Libyan insurgents fight Qaddafi. On April 28, in accordance with new rules of engagement agreed on by NATO members, Italy began bombing ‘selected targets' in Libya. The move was highly criticized by some members of Italy's majority government as well as the opposition. Following the first air strikes on Libyan targets, Qaddafi threatened revenge on Italy. On May 1, after Qaddafi's youngest son was killed in a NATO bombing in Tripoli, angry mobs attacked the British and Italian embassies and United Nations offices there.