The United States is now urging Pakistan to strike at the groups that hunt for disgruntled Pakistanis living abroad and then use them for plotting terrorist activities in Europe and North America. This is the message that two senior aides of US President Barack Obama, who arrived in Islamabad on Tuesday, are believed to have brought with them. Media reports earlier claimed that US National Security Adviser Gen James Jones and CIA Director Leon Panetta had come to Islamabad to investigate the May 1 bomb plot, which has been blamed on the Pakistani Taliban. Before flying out of Washington on Monday night, Gen Jones spoke with Pakistans Ambassador Husain Haqqani and is believed to have discussed with him the outlines of Mr Obamas informal message with him as well.