It flew about 600 km (372 miles) before falling into sea, South Korea said, while Japan's defense ministry estimated it covered a distance of 650 km (400 miles).
Russia vetoed the annual renewal of a panel of experts monitoring enforcement of longstanding United Nations sanctions against North Korea over its nuclear weapons and ballistic missile programs.
The meetings come as Pyongyang seeks to expand its diplomatic engagement after COVID-19 lockdowns.
Additional representatives from China and North Korea met in the same period of time.
N. Korea conducted a flight test of an intermediate-range hypersonic missile which it said at the time used a new solid-fuel engine and also tested the operation of a maneuverable warhead.
Kim Jong Un watches North-Korean war-like practice drills after the start of annual combined military drills by the Us and South Korea.
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