Reporting from Tobago and Port-Of-Spain, Trinidad — Rebuffing criticism of the warm greetings he exchanged with Venezuelan leader Hugo Chavez, President Obama said Sunday that the United States, with its overwhelming military superiority and need to improve its global image, could afford to extend such diplomatic “courtesy.” In a news conference capping a three-day meeting of leaders from the Western Hemisphere, Obama also said the U.S. must engage other countries through humanitarian gestures, not only military intervention.Full Story