India’s top national security adviser said Saturday that a large number of suspected militants are trying to infiltrate Kashmir and accused Pakistan of trying to foment trouble in the region.

Hours after Pakistani Prime Minister Imran Khan said his country will not initiate a nuclear war with India, his foreign ministry has clarified that the statement was taken out of context and there’s been no change in its nuke policy.

India has hinted at the possibility of changing its “No First Use” policy on nuclear weapons, amid escalating tensions with fellow-atomic state Pakistan over the disputed region of Kashmir.

Indian security officials said on Wednesday a group of Pakistani militants backed by the military tried to infiltrate Indian-controlled Kashmir to foment violence, according to Reuters partner ANI.

Pakistan says it has cut the last remaining public transport link with India — a bus line linking Lahore with New Delhi — as its anger mounts over a dispute with its nuclear rival over the divided Himalayan region of Kashmir.

Three decades ago, Ali Mohamad says he made a trip into Indian-controlled Kashmir to join a small armed militant group. Now he works in a shop on the Pakistani side of the region, but he hasn’t given up thoughts of returning to the conflict.

Indian Prime Minister Narendra Modi told the nation Thursday night that he stripped the Indian-controlled portion of Kashmir of its statehood and special constitutional status to free the disputed region of “terrorism and separatism.”

India has reportedly signed a deal with Russia for purchase of advanced air-to-air missiles to be fitted on its Sukhoi fighter jets, as New Delhi defies warnings from the US and turns to Moscow to strengthen its air defenses.

Russia’s Sukhoi Su-57 (also known as the PAK FA and the T-50) fifth-generation jet fighter now has an export permit, and the Russian government is reportedly reviewing documents to officially rename the aircraft from its T-50 internal designation to Su-57, according to a source in the Russian aviation industry.

Pakistani authorities say they have detained a terror suspect blamed for a four-day militant attack on the Indian port city of Mumbai in 2008, on terror finance charges.