Extra troops will not work, says Democratic congressman

President Barack Obama is to send 30,000 new troops to Afghanistan.

He argues that the surge will help "create the conditions for the United States to transfer responsibility to the Afghans".

The reinforcements will bring US troop strength in Afghanistan to more than 100,000.

However, there are people within his own party who doubt whether the policy will work.

Democratic Congressman Peter Welch is one of them.