Afghanistan attacked Pakistani military positions along the border late on Thursday in retaliation for Pakistani airstrikes, the Taliban said, adding to fears of a renewed escalation of violence between the neighbours.Videos shared by Afghan security forces showed Humvees driving through dark, mountainous terrain at night, lit by flashes of gunfire. Sustained bursts of automatic fire could be heard in the background.Pakistan was responding to “unprovoked fire” by Afghan forces along the border, the Information Ministry in Islamabad said. Afghan forces opened fire on posts in Pakistan’s mountainous northwest, sparking more than two hours of fighting before Pakistani troops retaliated, Pakistani officials said, speaking on condition of anonymity as they were not authorised to speak to the media.The clashes along the 2,600-km (1,615-mile) are the latest flare-up to threaten a fragile ceasefire following deadly clashes in October.Earlier this week, the Taliban warned it would make an “appropriate and measured response” to airstrikes launched by Pakistan over the weekend on what Islamabad said were camps of militants from Tehreek-e-Taliban Pakistan (TTP) and Islamic State in Khorasan Province in eastern Afghanistan.Islamabad says TTP leaders operate from Afghan territory and use it as a safe haven to plan attacks inside Pakistan, a charge Kabul denies.“In response to repeated provocations and violations by Pakistani military circles, large-scale offensive operations have been launched against Pakistani military positions and installations along the Durand Line,” the spokesperson for Afghanistan’s Taliban administration, Zabihullah Mujahid, said in a post on X.