Shooting probe pledged as protests target Tunisia PM
Provisional results show South Sudan votes to secede
Cowen resigns as party leader but remains Irish PM
Portugal set to re-elect president, boost for reforms
Big powers leave Iran nuclear talks empty-handed
Yemen arrests female activist, students protest
Karzai silent over parliament deal, lawmakers worry
Israel's Lieberman charts interim peace deal: report
West African leaders move to starve Gbagbo of funds
Two die after blast rips through Russian shopping centre