The Taliban's new political leader is expected to join meetings with U.S. officials in Qatar imminently, Taliban sources said Saturday as the latest round of talks to find ways to end the 17-year Afghan war entered a sixth day.

The peace talks, initially slated for two days, are continuing despite Taliban representatives staging a brief walkout Friday over differences with U.S. special peace envoy Zalmay Khalilzad.

Two senior Taliban officials in Afghanistan who are privy to the negotiations said momentum is building following Thursday's appointment of Mullah Abdul Ghani Baradar as the political leader of the hard-line Islamist group.