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The Russian Tu-95 bombers, accompanied by two Russian Su-35 fighter jets, were intercepted west of mainland Alaska at around 10:00 p.m. EDT on Tuesday (0200 GMT, Wednesday), said the North American Aerospace Defense Command in a statement.
American fighter made a successful escort of aircraft from Russian Federation.
On Sept. 1, two F-22 fighters intercepted Russian bombers flying in the Air Defense Identification Zone south of the Aleutians, NORAD said in a written statement.
This air defense zone - known as an ADIZ - was declared unilaterally by the US after World War II and is not binding under any global treaty.More news: Samsung hints Galaxy A phone with four cameras is coming next month
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According to the North American Aerospace Defense Command (NORAD), the Russian Tu-95 "bear" bombers were spotted shortly before 10pm Tuesday night. A defense official told the newspaper that the Russian bombers, which entered the Alaskan Air Defense Identification Zone (ADIZ), south of the Aleutian Islands, may have been practicing cruise missile strikes on United States missile defense systems based in Alaska. It extends more than 200 miles further from Alaska's westernmost island and 1,700 miles from Anchorage.
The Russian aircraft did not violate the borders of the US and Canada.
Defense officials told Fox that two Russian bombers came within 55 miles of Alaska's west coast in May, although the aircraft did not enter U.S. airspace, as was the case in the other reported incidents.
Later in the statement, Putin said he thought the games successfully demonstrated Russia's ability to "deflect potential military threats".
"NORAD employs a layered defense network of radars, satellites, as well as fighters to identify aircraft and determine the appropriate response", he added.