Support for Afghanistan at risk if security pact delayed further - U.S.

WASHINGTON (Reuters) - Global support for Afghanistan will fade the longer President Hamid Karzai delays signing a security pact with the United States, a senior U.S. official warned, as special envoy James Dobbins arrived in Kabul on Wednesday for talks with the government.

Frustration is mounting in Washington, and among NATO allies, over Karzai's refusal to sign a bilateral security agreement (BSA), intended to shape the U.S. military presence in the country beyond 2014.