If such allied policy coordination is unachievable, or would diminish the effectiveness of these measures while searching for consensus, the U.S. would be well-advised to proceed unilaterally.

CENTERFORSECURITYPOLICY: Doing business with Iran

In the 19th century, the church allied itself with the conservative movement, hoping in vain to fight off liberal measures curbing its privileges.

ECONOMIST: Mexico

There are a number of things that our team has put in place to try to deal with some of these challenges -- some more counterintelligence measures, some closer cooperation with village elders who can vouch for the efforts of our allied forces there.

WHITEHOUSE: The White House