Obama sends letter to Karzai, reaffirming U.S.-Afghanistan cooperation

The letter, delivered Thursday by U.S. Ambassador Karl W. Eikenberry in Kabul, thanked Karzai for organizing Obama's visit there late last month on short notice and "recommitted" the United States "to the success of our operation and our partnership," national security adviser James L. Jones said.

Obama assures Afghan leader in letter | Opinion
U.S. Now Trying Softer Approach Toward Karzai - nytimes