New Delhi, March 17 -- Former Indian Ambassador to Afghanistan, Amar Sinha on Tuesday termed Pakistan's recent airstrikes in Afghanistan a "major escalation," calling the reported bombing of a hospital in Kabul a "war crime".

Speaking to ANI, Sinha said the strike on the Omid Addiction Treatment Hospital, which reportedly led to the deaths of hundreds of civilians undergoing treatment, cannot be justified under any military pretext.

"This is a major escalation by Pakistan. Hitting a hospital and causing the death of hundreds of civilians under treatment is a war crime," Sinha said.

He noted that tensions along the Durand Line, the international border separating Pakistan and Afghanistan, have historically seen frequent skirmishes and e...