Any foreign troops left in Afghanistan after Nato's September withdrawal deadline will be at risk as occupiers, the Taliban has said.It comes amid reports that 1,000 mainly US troops could remain on the ground to protect diplomatic missions and Kabul's international airport.
Nato's 20-year military mission in the country has all but ended.
But violence in the country continues to rise with the Taliban taking more territory.
As Afghan forces prepare to take charge of security alone, concern is growing for the future of Kabul.
Taliban spokesman Suhail Shaheen said seizing Kabul militarily was "not Taliban policy".
But speaking to the BBC from the militant group's office in Qatar, he said no foreign forces - including military contractors - should remain in the city after the withdrawal was complete."If they leave behind their forces against the Doha agreement then in that case it will be the decision of our leadership how we proceed," he said.