Russian military aircraft next to the Alaska Defense Zone. There is a message

According to the American army, the air forces detected and followed the Russian military aircraft, which on Monday, April 14, flew into the air defense identification zone off the coast of Alaska, reports ABC News.
The command of the North American Air and Space Defense (NOAD) issued a press release on the Russian aircraft. As he emphasized, he did not pose a threat.
“The Russian plane remained in the international airspace and did not enter the sovereign airspace of the United States or Canada. Russian activity in the ADIZ zone in Alaska takes place regularly and is not perceived as a threat” – Norad informed in a press release.
What is the AdIZ zone?
The Air Identification Zone (ADIZ – Alaskan Air Defense Identification Zone) is an area stretching about 240 km from the US territory, where the United States reserve the right to track aircraft approaching its territory. The US authorities require planes that enter this zone, have transponders turned on or identify.
In turn, the airspace and US territorial water start about 22 km from the shoreline.