Mullah Dadullah, a known Taleban commander, said the Taleban had regrouped under the leadership of their supreme leader, Mullah Mohammad Omar, and were now attacking US-led coalition troops with renewed vigour and ferocity.
He has previously led assaults on opposition strongholds in northern Afghanistan and elsewhere in the country.
Dadullah took credit for a number of recent attacks on coalition forces and said the Taleban would fight until "Jews and Christians, all foreign crusaders" were expelled from Afghanistan.
He claimed there was no rift in the Taleban ranks and that those opposed to the Taleban in the past - such as former Prime Minister Gulbuddin Hekmatyar - now agreed with their campaign against "foreign occupation troops" in Afghanistan.
'Jihad'
According to Dadullah, al-Qaeda did not exist in Afghanistan and he said he did not know the fate or whereabouts of Osama bin-Laden.
Taliban