Palestinian protesters (R) clash with Palestinian President Mahmoud Abbas' plainclothes security personnel (L) as they tried to march on the headquarters in protest against the meeting between Abbas and Israeli Vice Premier Shaul Mofaz, even though it had been put off, in Ramallah June 30, 2012. Four people were detained. REUTERS/Mohamad Torokman (WEST BANK - Tags: POLITICS CIVIL UNREST)