An Iraqi force tried to mount a counterattack with trucks and buses full of soldiers against American troops holding a strategic intersection in western Baghdad near the Tigris River.

The borough posts police officers at strategic intersections to enforce the 25-mile-an-hour limit.

Prostitutes loiter discreetly in the shade of trees at strategic intersections during the day.

The security operation extended to the streets surrounding the house, where, the official said, supporters in lawn chairs took positions at strategic intersections and used walkie-talkies and cell phones to report law enforcement activity.

The importance of the canal as a strategic intersection was again apparent during the First World War, when Britain and France closed the canal to non-Allied shipping.

"The city could have weighing-in stations at strategic intersections," he said.

The green-and-white signs, which have been put at strategic intersections, serve a psychological as well as practical purpose, said Janet T. Langsam, executive director of the Arts Council.

Russia and the United States have competing interests in the Caucasus, a strategic intersection of Asia and Europe, and Russia has openly supported the separatists.

Cameras and computers at strategic intersections are taking note of thousands of violations annually, and doling out more citations than an equivalent number of flesh-and-blood officers could write up.

Sada also serves as the Principal in Texas Global-LLP, a partnership that manages the strategic intersection between Business, Government and Public Affairs.