Secretary of State Hillary Rodham Clinton is heading to Latin America on a weeklong, five-nation tour expected to be dominated by the earthquake in Chile and building support for fresh penalties against Iran.

Clinton plans to leave Washington on Sunday evening to attend the inauguration of Uruguay's new president, ex-guerrilla Jose Mujica (MOO'-hee-kah).

Unless the earthquake alters her itinerary, Clinton is due late Monday in Chile, where she will offer support for disaster rescue and recovery efforts.

In Brazil, Clinton will seek support for more penalties on Iran over its nuclear program. Brazil is a voting member of the U.N. Security Council and has been reluctant to impose additional penalties.

Clinton wraps up the trip with stops in Costa Rica and Guatemala.