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
The mother of "bucket list" cancer patient Stephen Sutton has said signs of her son's illness were "ignored".
Boxing champion and occasional actor Mike Tyson has been praised for coming to the aid of a motorcyclist injured in a crash in Las Vegas.
A website is threatening the release of hacked nude pictures of Emma Watson, reportedly in response to her speech on gender equality.