In his message, which he said was to mark the third anniversary of the internment of Islamists at the US military base of Guantanamo Bay, Cuba, Zawahiri also hit out at US plans for reform in the Arab and Islamic worlds.
The US prison camp at Guantanamo "exposes the reality of the reform and democracy that the United States claims to be trying to establish in our countries", said the voice attributed to Zawahiri but whose authenticity could not immediately be verified.
He said that reform proposed by Washington would be based on the US prison camps in Cuba and in Afghanistan, as well as the Iraqi prison of Abu Ghraib, where US troops' abuse of Iraqi prisoners shocked the world.