Barack Obama and Michelle Obama hosted a State Dinner at the White House on Tuesday. The event was meant to celebrate the strong 50 year relationship between Singapore and the United States; Singapore's Prime Minister, Lee Hsien Loong, and his wife Ho Ching were the guests of ho**r. Perhaps the sweetest moment, though, happened outside the dinner, when Barack looked lovingly at his wife and even offered a cute thumbs up to the photographers and other surrounding guests. We'll definitely have to add this to the couple's growing list of wonderful moments together.