The Central government should "seriously consider the policy even if it leads to escalation in hostilities", said Singh, who today visited the site of yesterday's attack and the families of those killed in it.
He meet bereaved families and expressed his deep sorrow over their loss. Singh also assured support to the injured police personnel and civilians undergoing treatment at various hospitals.
The Congress leader attended the last rites of two police personnel who were yesterday killed in the attack and visited the family of slain police officer Baljeet Singh in Kapurthala.
Asked whether Prime Minister Narendra Modi should continue to engage Pakistan diplomatically, he said "Pakistan Prime Minister (Nawaz Sharif) hardly has any say or influence over army and ISI, which run the show there."
He recalled "while former prime minister Atal Bihari Vajpayee was taking a round of Lahore in a bus with Sharif, the Pakistani military was infiltrating into Kargil and preparing for a war against India."