BBC News wrote:President Barack Obama is to tell the American people that US troops will start to leave Afghanistan within three years, a senior official has said.
He will outline the rough withdrawal plan in a speech to the nation, when he will also announce a rapid six-month deployment of 30,000 extra soldiers.
Mr Obama has also asked Nato allies to send up to 10,000 more combat troops.
But France has refused, while Germany postponed any decision. The UK has agreed to send 500 more soldiers.
In Tuesday evening's much-anticipated speech at West Point military academy, Mr Obama is expected to make an accelerated troop surge the centrepiece of his new strategy for Afghanistan.