decider – noun

A person who takes credit for making decisions from sets of options stacked by other people.

COMMENT: Choose from the following options on what to do in Iraq:

(1) Fight the enemy there, so we don't face him here.

(2) Cut and run.

(3) Surrender.

(4) Abandon the troops.

(5) Embolden America's enemies.

If you chose (1), you are a decider.