Asif Ali Zardari, husband of slain former premier Benazir Bhutto and former premier Nawaz Sharif (L) shake hands during a press conference in Bhurban near Islamabad, Pakistan, Sunday, March 9, 2008. Pakistan's two major opposition leaders signed a formal declaration on forming a coalition government, and urged President Pervez Musharraf to convene parliament without delay. [Agencies]