A Feb. 16 photo released by Japan’s government shows a ship in the East China Sea. Japan’s military saw a ship-to-ship transfer that it “strongly suspects” violates U.N. sanctions on North Korea.

A Feb. 16 photo released by Japan’s government shows a ship in the East China Sea. Japan’s military saw a ship-to-ship transfer that it “strongly suspects” violates U.N. sanctions on North Korea.