This hand out picture released by the Pakistan People's Party shows Pakistani former premier Nawaz Sharif (L) and his coalition partner Asif Ali Zardari, co-chairman of the ruling Pakistan People's Party addressing a press conference in Islamabad on August 7, 2008. Pakistan's ruling coalition said that it would impeach President Pervez Musharraf, posing the biggest threat to the key US ally in the "war on terror" since he seized power in a 1999 coup. Zardari and Sharif made the announcement after three days of marathon talks in Islamabad.