KABUL - The Taliban are not involved in peace talks between an insurgent faction and Afghan President Hamid Karzai, and will not agree to talks until Western troops are withdrawn from the country, a spokesman said on Tuesday.

Karzai's office said on Monday he had held his first direct talks in Kabul with a senior delegation from Hezb-i-Islami, one of the three main insurgent groups in the country and rivals to the Taliban.

The meeting was an unprecedented success in Karzai's efforts to reach out to insurgents this year, a crucial time when Washington is sending a "surge" of extra combat troops before planning to start withdrawing next year.