Alaska, Bering sea and PLAN
After the well publicised joint exercises between the Russian Navy (Pacific Fleet) and the Chinese Navy, PLA(N), now reports are in of a group of Russian and Chinese naval ships of Alaska, (probably around the Aleutian island chain).
Eleven Russian and Chinese ships came close to the Aleutian Islands, but never entered U.S. territorial waters according to U.S. officials to WSJ.
Four U.S. destroyers and P-8 aircraft were dispatched to shadow the patrol. It was reportedly a historical first as it is appeared to be the largest such flotilla to approach the U.S.
But it isn't the first time, as this infographic shows:
The Russian Navy and the Chinese Navy commenced their third joint patrol in the Pacific Ocean, after the Russian Navy Day conmemorations in Vladivostok.
The naval ships both countries formed a "joint detachment" and began following a predetermined route, as confirmed by the press service of the Pacific Fleet.