President Barack Obama pledged to end the ban on homosexuals serving openly in the military in a speech Saturday, but acknowledged to a cheering crowd that the policy changes he promised on the campaign trail are not coming as quickly as they expected.

"I will end 'don't ask-don't tell,'" Obama said at the annual dinner of the Human Rights Campaign, a gay civil rights advocacy group.

He did not give a timetable for the repeal of the law passed by Congress in 1993 and signed by President Bill Clinton, who also promised to repeal the ban on homosexuals in the military but was blunted by opposition in the military and Congress.

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