Explosions were heard in the Afghan capital Kabul on Sunday, AFP journalists said, with the Taliban government saying they were responding to aerial Pakistan attacks.
The United States said it had destroyed the headquarters of Iran's powerful Revolutionary Guard force, but also announced the first US fatalities in the war to overturn the Iranian government.
Afghan and Pakistani troops battled along their border, Afghan residents and officials told AFP on Sunday, with the fighting coming alongside multiple strikes including the former US air base at Bagram.
The biggest disruption to global air transport since the Covid pandemic continued Sunday, with thousands of flights affected and busy Middle Eastern hubs including Dubai and Doha shuttered as Iran lashed out after US-Israeli strikes.