Hundreds of thousands of Muslim worshippers loyal to Shiite leader Moqtada Sadr attend a Friday prayer service in Iraq's capital, in a display of political might to revive stalled talks on government formation. "We are at a difficult... crossroads in the formation of the government, entrusted to some we do not trust," says Sheikh Mahmud al-Jayashi, reading Sadr's sermon. Some factions have shown themselves to "not be up to the task", he contends. IMAGES AND SOUNDBITES