A top American expert on South Asian affairs has said Pakistan has played a double game with the US during the global war on terrorism. C Christine Fair, Associate Professor at Georgetown University's Security Studies Programme urged the Trump administration to use many tools it has to demand Islamabad to knock off its jihadi habit. <br/><br/>Fair said, the US has many tools at its disposal, ranging from sanctions, to declaring Pakistan to be a state sponsor of terror, to significant curbs on military assistance and Washington needs to muster the intestinal fortitude to employ these tools now.