As the leaders of the United States and Ukraine meet in Washington, debate flares in the U.S. Congress over how much -- and under what conditions -- additional U.S. funding should be sent to the European country. We're exploring a mysterious fort in the Sahara Desert and a visiting a historic landmark in France. Plus, a baseball superstar reportedly inks a record contract, and a Santa in Missouri uses sign language to delight deaf and hearing-impaired children.