The new Pakistani Taliban chief released a new video clip Sunday on Pakistani television, vowing to retaliate against the U.S. and Pakistan.

Hakimullah Mehsud said his group would avenge the killing of his brother Baitullah Mehsud and strike back at Pakistan and the U.S. for the increasing number of drone attacks in the tribal areas along the border with Afghanistan.

We will take severe revenge for Baitullah Mehsud's killing and the continued drone strikes, Hakimullah Mehsud said in the video.

I am alive and sitting in front of you. All the stories about my death were baseless. You can see me that I am alive, he added, dispelling rumors of his death on August.

Hakimullah Mehsud claimed to have taken over the reins of the feared Tehreek-e-Taliban Pakistan in late August, after finally confirming that their commander Baitullah Mehsud was killed in a US missile strike that month.

American officials have said they are considering a strategy of intensified drone attacks combined with the deployment of special operations forces against Al Qaeda and Taliban targets on the border of Pakistan and sending more troops to Afghanistan.