DERA ISMAIL KHAN (Agencies) - A new militia leader has emerged in Pakistan to openly challenge Tehrik-i-Taliban Pakistan leader Baitullah Mehsud for the first time from within his own tribe, marking the start of a bloody confrontation in the wild Waziristan region that could have profound consequences for both Pakistan and the West. In his first interview with Western news reporters, Qari Zainuddin vowed this week to wipe out Mehsud and rescue Pakistan from a reign of terror that has pushed the nuclear-armed US ally toward collapse. Zainuddin charged that Mehsud, who is the leader of the Pakistani Taliban, had betrayed both his Muslim religion and the Mehsud tribe of his native South Waziristan, which borders Afghanistan. To fight our own country is wrong, said Zainuddin, in an interview given in a hideout on the edge of South Waziristan, surrounded by masked Kalashnikov-totting followers. Islam doesnt give permission to fight against a Muslim country. This is where we differ. What were seeing these days, these bombings in mosques, in markets, in hospitals; these are not allowed in Islam. We dont agree with them. But victory will not mean any lessening of efforts to expel Westerners from neighbouring Afghanistan, Zainuddin said. He pledged to send his forces into Afghanistan once Mehsud is vanquished. The whole Muslim world should come together because all infidels have come together against Islam. Whether it is Iraq, Afghanistan, Palestine, Chechnya, Muslims must protect themselves, said Zainuddin. The problem is that we cannot go to Afghanistan these days because we have had to deal with Baitullah. Zainuddin, who described himself as 'real Taliban, reportedly has gathered as many as 3,000 armed followers and is being secretly backed by the Pakistan state against Mehsud, who has a $5 million bounty on his head. Many believe that Mehsud can be defeated only by a member of his own clan. Zainuddin is a Mehsud and also he used to be part of Mehsuds network, giving him an intimate knowledge of its working and its members. A tribal 'jirga, or meeting of Mehsud tribal chiefs, has been called for the coming week to decide whether to back Zainuddin.