Afghan President Hamid Karzai said the US needs to bring peace to Afghanistan before he will sign a security deal enabling Washington to keep troops in the country beyond next year.
Karzai rejected calls by Afghanistan's council of tribal elders - the Loya Jirga - to sign the security deal.
He told the assembly: "If there is no peace, then this agreement will bring misfortune to Afghanistan.
"Peace is our precondition. America should bring us peace and then we will sign it."
More top news
Socialite Tara Palmer-Tomkinson has been cautioned by police after a 'disturbance' at Heathrow Airport.
The NHS is to set up 11 centres to unlock the secrets of DNA and help develop tests and drugs to target cancer and rare genetic diseases.
Australian businessman named as Alan Sugar's newest apprentice and winner of a £250,000 investment in his fledgling company.