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Opposition leaders in Haiti, who have been trying to pressure President Jean-Bertrand Aristide to resign, said Tuesday that they rejected a U.S.-backed peace proposal because it does not require the embattled president to step down.

The Pentagon announced today that it is going to try two prisoners held at Guantanamo Bay in military tribunals. Ray Suarez discusses the decision with Eugene Fidell, the founder of the National Institute of Military Justice.

Fifty U.S. Marines left for Haiti on Monday to protect the American Embassy and diplomats as armed rebels overran the country's second-largest city, Cap-Haitien, and threatened to attack the capital, Port-au-Prince.