As Ills Persist, Afghan Leader Is Losing Luster

WASHINGTON — After six years in which Hamid Karzai has been the darling of the United States and its allies, his luster may be fading.

But there is a growing concern in Europe, the United Nations and even the Bush administration that Mr. Karzai, while well-spoken, colorful and often larger than life, is not up to addressing Afghanistan’s many troubles.