Washington (CNN) - Letting openly gay or lesbian troops serve in the military would have little lasting impact on the U.S. armed forces, a major Pentagon review has found, according to a U.S. official.

Putting an end to "don't ask, don't tell," would have "some limited and isolated disruption to unit cohesion and retention," the year-long study found, but the effects would not be long-lasting or widespread.
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