Green Zone Lock Down

WASHINGTON - The United States on Tuesday suspended all land travel by U.S. diplomats and other civilian officials throughout Iraq, except in Baghdad's heavily fortified Green Zone. The move follows a weekend incident involving private security guards protecting a diplomatic convoy in which a number of Iraqi civilians were killed.

In a notice sent to Americans in Iraq, the U.S. Embassy in Baghdad said it had taken the step to review the security of its personnel and possible increased threats to those leaving the Green Zone while accompanied by such security details.