The US House of Representatives has passed a Defence bill pledging 900 million dollars in economic and other assistance to Pakistan. However, the assistant pledge has put the condition of a certification from the US Defence Secretary that Pakistan is committed to fighting all terrorist groups, including the Haqqani network. <br/><br/>Meanwhile, a top US commander has said Pakistan-based Haqqani network continues to pose greatest threat to US troops in Afghanistan. General John Nicholson, Commander of US and NATO forces in Afghanistan has said the Haqqanis pose the greatest threat to Americans and to the coalition partners and to the Afghans.