1. Ayman al-Zawahiri is the leader of
al Qaeda. A reward up to $25 million has been offered by the U.S.
government. Click through to see the men allegedly plotting, directing
and, in some cases, carrying out acts of terror around the world.
Despite the whittling away by drone attacks of "al Qaeda central" in the
mountainous border region between Afghanistan and Pakistan, the group's
leader remains vocal and...
