Indian soldiers stand next to the wreckage of Indian Air Force's helicopter after it crashed in Budgam district in Kashmir

India has accused Pakistan of an “unprovoked act of aggression” after both countries claimed to have shot down each other’s military jets.

Islamabad captured an Indian pilot a day after Indian warplanes struck inside Pakistan for the first time since a 1971 war.

Tension has been running high since a suicide car bombing by Pakistan-based militants in Indian-controlled Kashmir killed at least 40 Indian paramilitary police earlier this month.

But the risk of conflict rose dramatically on Tuesday when India launched an air strike on what it said was a militant training base.

New Delhi claimed at least 300 militants were killed in Tuesday’s strike, while Pakistan says no one was killed.

Pakistan shoots down Indian fighter jets: Reaction in pictures Show all 28 1 /28 Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistan shoots down Indian fighter jets: Reaction in pictures Activists of Al-Badr Mujahideen, an islamic militant group, burn an effigy of Indian Prime Minister Narendra Modi during an anti-India protest in Peshawar, Pakistan AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures A Pakistani girl holds a light candle during a vigil for peace in Lahore on March 3 AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures School children react as they celebrate the release of Indian Air Force pilot Wing Commander Abhinandan Varthaman by Pakistan at a school in Ahmedabad Reuters Pakistan shoots down Indian fighter jets: Reaction in pictures Indian pilot, Wing Commander Abhinandan, stands under armed escort near Pakistan-India border in Wagah Reuters Pakistan shoots down Indian fighter jets: Reaction in pictures Indian Border Security Force soldiers patrol along the border with Pakistan EPA Pakistan shoots down Indian fighter jets: Reaction in pictures A videograb allegedly shows the captured Indian Air Force pilot in the custody of Pakistani military SWNS Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistani civil society activists hold anti-war signs during a peace rally in Islamabad AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistani civil society activists hold anti-war signs during a peace rally in Islamabad AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures Activists of Al-Badr Mujahideen, an islamic militant group, burn an effigy of Indian Prime Minister Narendra Modi during an anti-India protest in Peshawar, Pakistan Reuters Pakistan shoots down Indian fighter jets: Reaction in pictures Kashmiri villagers look on at the smouldering wreckage of an Indian fighter jet after it was shot down by the Pakistani military AP Pakistan shoots down Indian fighter jets: Reaction in pictures Indian soldiers and Kashmiri onlookers stand look on as an Indian army helicopter lands near the site where an Indian Air Force jet was shot down by the Pakistani military AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures An Indian soldier gestures near the wreckage of an Indian Air Force fighter jet that was shot down by the Pakistani military AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures Supporters of a Pakistani religious group Islami Jamiat-e-Talaba brand Indian Prime Minister Narendra Modi a terrorist at a rally to condemn Indian aggression AP Pakistan shoots down Indian fighter jets: Reaction in pictures Indian soldiers and Kashmiri villagers look on at the smouldering wreckage of an Indian fighter jet after it was shot down by the Pakistani military AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures India's Border Security Force soldiers patrol along the fenced border with Pakistan on February 26 Reuters Pakistan shoots down Indian fighter jets: Reaction in pictures Protesters in Pakistan march against Indian Prime Minister Narendra Modi after the Indian airstrike on allege Pakistan terrorist camp EPA Pakistan shoots down Indian fighter jets: Reaction in pictures Supporters of India's ruling Bhartiya Janta Party workers hold Indian flags as they celebrate the Indian airstrike on allege Pakistan terrorist camp AP Pakistan shoots down Indian fighter jets: Reaction in pictures Protesters in Pakistan march against Indian Prime Minister Narendra Modi after the Indian airstrike on allege Pakistan terrorist camp EPA Pakistan shoots down Indian fighter jets: Reaction in pictures People in India burn an effigy that represents Pakistan as they celebrate the Indian airstrike on allege Pakistan terrorist camp Reuters Pakistan shoots down Indian fighter jets: Reaction in pictures Indian soldiers and Kashmiri villagers look on at the smouldering wreckage of an Indian fighter jet after it was shot down by the Pakistani military AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures Bhartiya Janta Party workers hold Indian flags as they celebrate the Indian airstrike on allege Pakistan terrorist camp EPA Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistani Kashmiris in the border town of Chakoti walk past India-bound cargo trucks that are parked as the road to India is closed AP Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistani Army soldiers escort journalists to the scene where Indian fighter jets struck in a violation of Pakistani airspace EPA Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistani Army soldiers escort journalists to the scene where Indian fighter jets struck in a violation of Pakistani airspace EPA Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistani Army soldiers escort journalists to the scene where Indian fighter jets struck in a violation of Pakistani airspace EPA Pakistan shoots down Indian fighter jets: Reaction in pictures Workers enter a concrete bunker that they have built in a residential area near the border Reuters Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistani soldiers and journalists gather at the site where Indian fighter jets struck in a violation of Pakistani airspace AFP/Getty Pakistan shoots down Indian fighter jets: Reaction in pictures Pakistani soldiers and journalists gather at the site where Indian fighter jets struck in a violation of Pakistani airspace AFP/Getty

The White House condemned the intensifying conflict and urged “both sides to take immediate steps to de-escalate the situation”.

Pakistan’s envoy to the United States, Asad Majeed Khan, said Islamabad would like to see the Trump administration play a more active role in easing the crisis. “We would certainly like to have more, and would certainly like to see more active involvement of the United States,” he told reporters.

At the same time, he said the lack of US condemnation of India’s strike on Pakistan is “construed and understood as an endorsement of the Indian position, and that is what emboldened them even more.”

Pakistani prime minister Imran Khan called for talks with India and hoped “better sense” would prevail so that both sides could de-escalate.

“History tells us that wars are full of miscalculation. My question is that, given the weapons we have, can we afford miscalculation,” Mr Khan said during a brief televised broadcast to the nation. “We should sit down and talk.”

The Pakistan government’s official Twitter account released a video of a man it claimed was an Indian pilot who had been shot down.

The man, whom Pakistan has named as Wing Commander Abhi Nandan and whose face was bloodied and blindfolded, gives his name and service number before telling a man questioning him: “I’m sorry sir, that’s all I’m supposed to tell you.”

A statement from India’s foreign ministry said the pilot’s treatment was a “vulgar display of an injured personnel of the Indian Air Force in violation of all norms of international humanitarian law and the Geneva Convention,” ordering his immediate release. India has not yet named the pilot.

Pakistan and India have fought three wars since independence from British colonial rule in 1947, two over the disputed Himalayan region of Kashmir, and went to the brink of a fourth in 2002 after a Pakistani militant attack on India’s parliament.

The latest escalation marks a sudden turnaround in relations between the two countries, both of which claim Kashmir in full, but only rule in part.

Follow how we covered the news as it unfolded