Pakistan has carried out airstrikes in Kabul and two other Afghan provinces, Afghanistan’s government spokesperson says.

Pakistan and Afghanistan traded attacks in a dramatic escalation of tensions between the countries that Pakistan's defence minister said Friday means they are now in "open war."

Pakistan is in an “open war” with Defense Minister Khawaja Mohammad Asif said Friday, with fighting escalating into the most serious armed confrontation between the two uneasy neighbors since a Qatari-mediated ceasefire in October.

Pakistan has declared an "open war" with Afghanistan following months of conflict. CBS News' Imtiaz Tyab and Sam Vinograd have more.

Pakistan Airstrike on Kabul, Kandahar and Paktia LIVE Updates: Early Friday morning, explosions and aircraft sounds were heard in Kabul, just hours after Afghanistan claimed it had attacked Pakistani border posts.

Afghanistan claims it shot down a Pakistani aircraft as both sides trade allegations and casualty figures following Islamabad’s launch of Operation Ghazab lil-Haq.

Cross-border fighting between Pakistan and Afghanistan intensified overnight, with both sides claiming heavy losses and the Pakistani defence minister saying his country was in an "

Amid the escalating tensions between Afghanistan and Pakistan, Kabul is claiming that it has shot down a Pakistani aircraft entering its airspace.