Union Minister and former Army chief General VK Singh on Thursday stressed the need to isolate Pakistan. Singh`s statement came as he responded to reporters on the death of Colonel Manpreet Singh, Major Ashish Dhonak and DSP Humayun Bhat, during the Anantnag encounter in Jammu and Kashmir. The commanding officer of 19 Rashtriya Rifles, a major rank officer and a Deputy superintendent of police were killed in an encounter with the terrorists at Gadole in the Kokernag area of Anantnag district on Wednesday. Security was beefed up in the Kokeranag area after the Anantnag encounter.