Perhaps Bin Ladin was trying to study U.S. reactions.

On December 15, 2001, his final column warned that civil liberties were at risk in the U.S. reaction to the September 11 attacks.

I think they're afraid of the U.S. reaction to their presence here.

A larger offensive might provoke a U.S. reaction and interfere with the big push planned for 1976.

Some examples of the Israeli record, and the U.S. reaction to it, have already been reviewed.

The U.S. reaction was to veto the resolution.

A panicked U.S. reaction could actually provoke the religious polarization it is meant to combat.

The U.S. reaction is to re-emphasize that Saddam must comply and that all diplomatic and military options are on the table.

But other Mexicans argue the U.S. reaction to one agent's death is disproportionate when 300 of their police have been killed in the drug war.

When the mother died in her attempt to choose freedom for herself and her son, the initial U.S. public reaction was to grant him asylum.