The 1984 Summer Olympics, officially known as the Games of the XXIII Olympiad, was an international multi-sport event that was held from July 28 to August 12, 1984, in Los Angeles, United States (and other venues around the United States). This was the second time that Los Angeles had hosted the Games, the first being in 1932. California was the home state of then-U.S. President Ronald Reagan, who officially opened the Games. The logo for the 1984 Games, branded "Stars in Motion", featured red, white and blue stars arranged horizontally and struck through with alternating streaks. The official mascot of the Games was Sam the Olympic Eagle. These were the first Summer Olympic Games under the IOC presidency of Juan Antonio Samaranch. The 1984 Games were boycotted by a total of fourteen Eastern Bloc countries, including the Soviet Union and East Germany, in response to the American-led boycott of the previous 1980 Summer Olympics in Moscow in protest of the Soviet invasion of Afghanistan; Romania was the only Eastern Bloc nation that opted to attend the Games. Iran and Libya also chose to boycott the Games for unrelated reasons. Despite the field being depleted in certain sports due to the boycott, 140 National Olympic Committees took part, which was a record at the time. The United States won the most gold and overall medals, followed by Romania and West Germany. The 1984 Summer Olympics are widely considered to be the most financially successful modern Olympics and served as an example of how to run the model Olympic Games. As a result of low construction costs, coupled with a reliance on private corporate funding, the 1984 Olympic Games generated a profit of more than $250 million. On July 18, 2009, a 25th anniversary celebration was held in the main Olympic Stadium. The celebration included a speech by the former president of the Los Angeles Olympic Organizing Committee, Peter Ueberroth, and a re-creation of the lighting of the cauldron. Los Angeles will host the Summer Olympics for the third time in 2028.