India and the United States are holding a summit in Papua New Guinea. The summit is part of a larger effort to strengthen ties between the two countries.
The U.S. and Australia are also hosting the summit, which will last two days. It is the first time the two nations have met since the end of the Second World War, when they were at war with each other. The United States and Australia have been at loggerheads over the use of nuclear weapons in the Pacific Ocean since the 1950s.