The Taliban say they will participate in what they call "intra-Afghan" talks in Moscow among prominent Afghan figures, including former President Hamid Karzai and tribal elders — but no Kabul government officials.
The office of Afghan President Ashraf Ghani has criticized the meeting in the Russian capital, expected on Tuesday, as a gathering of the power-hungry.
Zalmay Khalilzad, the U.S. envoy tasked with resolving Afghanistan's 17-year war, has been pressing for such a dialogue, even as he holds separate negotiations with the Taliban.
The Taliban refuse to talk to Ghani's government, which they denounce as a U.S. puppet.
A statement released on Monday by Afghans attending the Moscow meeting describes it as "the first step toward intra-Afghan dialogue."
The Taliban delegation will be led by Sher Mohammad Abbas Stanikzai.