25 countries are participating in RIMPAC 2018: Australia, Brunei, Canada, Chile, Colombia, Denmark, France, Germany, India, Indonesia, Italy, Japan, Malaysia, Mexico, Netherlands, New Zealand, Norway, People's Republic of China, Peru, the Republic of Korea, the Republic of the Philippines, Singapore, Thailand, Tonga, the United Kingdom and the United States.
They will be deploying 45 surface ships, five submarines, more than 200 aircraft and 25,000 personnel.
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