The United States will not applogize for any mistakes in the Afghanistan invasion as a prerequiste to signing a security agreement with Afghanistan. 

The National Security Agency made the statement after claims that the White House would write such a letter in order to allow small number of U.S. troops in Afghanistan well past the 2014 deadline to withdraw.  NSA Advisor Susan Rice says, "No such letter has been drafted or delivered. There is not a need for the United States to apologize to Afghanistan.  Quite the contrary, we have sacrificed and supported them in their democratic progress and in tackling the insurgents and al Qaeda. So that (letter of apology) is not on the table."

The story first arose after reports suggested Afghan President Hamid Karzai's spokesman told reporters that President Obama would write an official letter guaranteeing the United States would not repeat "past mistakes" that led to civilian casualties. The controversy comes on the eve of a an important meeting of Afghan leaders, known as the Loya Jirga, where the issue of keeping a limited number of American troops in Afghanistan will be discussed.

White House spokesman Jay Carney said a "general agreement" between the two countries was reached last month. There have been talks in the weeks since "to finalize the text," he said.

U.S. troops were deployed to Afghanistan following the 9-11 attacks.  President Obama promised to reduce U.S. troop levels in Afghanistan, with the goal to end the U.S. combat mission by the end of 2014.

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