Marines' war-zone tour extended

WASHINGTON — The Pentagon has ordered roughly 1,250 Marines serving as trainers for the Afghan security forces to stay on the warfront almost a month longer to continue a mission that military leaders say is a top priority, according to a senior military official.

In addition, Defense Secretary Robert Gates has authorized the deployment of up to 200 other troops to Afghanistan to support the Marines. That includes eight helicopter crews that could be shifted from Iraq if commanders decide. ....