Prime Minister Yousuf Raza Gilani on Sunday asked Foreign Minister Hina Rabbani Khar to cut short a visit to the US and return to Pakistan even as the army's top commanders held a special meeting against the backdrop of mounting tensions with the US over ISI's links with terror groups.TV news channels quoting official sources said, Gilani asked Khar, who was representing Pakistan at the UNGeneral Assembly in New York, to return to the country immediately.Khar was expected to fly back to Islamabad tonight. There was no official word on the development which follows US allegations that ISI supported and encouraged its veritablearm Haqqani terror network to launch attacks in Afghanistan.The premier had earlier called off his visit to the US and sent Khar in his place. Though Gilani said he had cancelled the visit to oversee relief operations in flood-hit areas, reports said he had decided not to go to the US after President Barack Obama refused to meet him on the sidelines of the UN meet.Earlier in the day, Pakistan Army chief Gen Ashfaq Parvez Kayani chaired a six-hour special meeting of his CorpsCommanders to review the security situation in the backdrop of growing tensions and sharp escalation of rhetoric with the US.