Submitted: Aug 1, 2008 - George Bush opened the way for US troop cuts in Iraq yesterday when he said security gains in the country were durable and cut the length of deployments. In the first significant US reduction since Bush launched the "surge" early last year that sent an extra 30,000 troops to Iraq, he ordered tours of duty be cut from 15 months to 12, effective today. His televised statement from the White House…