But the exact size and composition of the ISAF will not be decided until the "military technical agreement" (MTA) with the interim administration led by Hamid Karzai is signed.

BBC: UK to lead 'risky' Afghan mission

The original mission of KFOR was to monitor, verify, and, when necessary, enforce compliance with the Military Technical Agreement between NATO and the then-Federal Republic of Yugoslavia (now Serbia), while maintaining a safe and secure environment.

WHITEHOUSE: Letter from the President -- War Powers Resolution