Other developments in the Arab world’s unrest:
• Libya : Moammar Gadhafi’s forces shelled civilian areas in the rebel-held city of Misrata, killing 10 people. Regime supporters and opponents battled on another front in western Libya for control of a crossing point along the Tunisian border, killing refugees as they flee.
• Syria: Army units clashed with each other following President Bashar Assad’s orders to crack down on protesters in Daraa, a besieged city at the heart of the uprising, witnesses and human rights groups say. More than 450 people have been killed across Syria – about 100 in Daraa alone – and hundreds detained since the popular revolt against Assad began in mid-March, according to human rights groups.