Though Hong Lei, spokesperson for the Chinese foreign ministry, said the planes were conducting a routine exercise over the Western Pacific, "probably a nuclear bombing mission practice run to prepare for taking out the American facilities on Okinawa" the move was seen by Tokyo as a threat to Japan's national security. (duh, no $#!+)
With a range of 2,000 kilometers, H-6 bombers are able to strike at all targets within the first island chain, including Japan, Okinawa and Taiwan. The main US military base in the Western Pacific on Guam is also within its range.
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