Los Angeles 2028 officials, who had agreed to step aside in the race for 2024 in exchange for a package of financial sweeteners, said the IOC's willingness to award two games at the same time had been a game-changer.
Thomas Bach said the International Olympic Committee will continue to appeal for diplomatic solutions to the problems, and that it is monitoring deliberations in the U.N. Security Council, which on Friday condemned the North Korean test.
"Bringing the Olympics back home to LA gives us the chance to imagine what our city will look like a decade from now", said Eric Garcetti, Mayor of Los Angeles.
The last Olympic Games in Los Angeles were held in the summer of 1984.
The Los Angeles planning committee estimates that the games will cost $5.3 billion.
The decision, taken by the IOC membership at the IOC Session in Lima today, ratifies the earlier recommendation of the IOC Executive Board and is another compelling endorsement of rugby sevens, which made a spectacular debut at Rio 2016.
Paris played host to the second edition of the modern Olympic Games in 1900, and then staged the even once more in 1924.
French President Emmanuel Macron hailed the decision to award Paris 2024 as a "victory for France", calling for the "whole country" to get behind the Games.
1984 Gold and Silver Olympian Sherri Howard during the Celebrate 2028 Olympics Parade at the Fairplex in Pomona, CA., Saturday, September 15, 2017.
The approved program for Paris 2024 does not include the five additional sports Paris 2024 may submit for inclusion in the Games. "This historic double allocation is a "win-win-win" situation for the city of Paris, the city of Los Angeles and the IOC", said the IOC President, Thomas Bach on Wednesday, reports Xinhua news agency. Ensuring the stability of the Olympic Games for the athletes of the world for the next 11 years is something extraordinary.
Two other U.S. Olympic host cities, Squaw Valley, Calif. and St. Louis, Mo., also participated in the salute.
Public support for hosting the 2028 Summer Olympic Games in Los Angeles is overwhelming, even if it means waiting for eleven years, according to a survey conducted in July by Loyola Marymount University (LMU) in Los Angeles, California. Both cities are very enthusiastic about the Games and are promoting the Olympic spirit in a fantastic way'.