Three Chinese warships are in the Baltic to start China's first naval exercises with Russia in the region.
The Chinese destroyer, frigate and supply ship will spend a week training with the Russian navy off Kaliningrad, a highly militarised Russian exclave.
The destroyer called Hefei is a new Type 052Dbristling with missiles.
Russia is deploying two new corvettes, some other ships and military aircraft in the drills. Anti-submarine, anti-ship and rescue drills are planned.
Chinese-Russian military drills have been held every year since 2012, but they are conducting them in the Baltic for the first time, closely watched by Nato.