US President Trump says he is developing a missile that is 17 times faster than a conventional missile on Thursday.

This remark is interpreted to contain Russia and China, which are focusing on developing supersonic weapons.

President Trump said, "You may have heard that Russia is developing five times, and China is developing five to six times."

In the field of developing hypersonic missiles, Russia and China, as well as the United States, are in the process of escalating the arms race.

Russia deployed an ultra-sonic missile 'Avangard', which is 20 times faster than the speed of sound, in December last year.

China introduced the ballistic missile Dongfeng-17, which can achieve 10 times the speed of sound at the fever ceremony of the 70th anniversary of its founding last October.

Founded in December of last year, the United States Space Force has 16,000 members.

(Photo = Getty Image Korea)