The Kremlin denounced on Tuesday the "imperialist character" of the American report on national security strategy, accusing Washington of clinging to a "unipolar world".

"The imperialist character of this document is obvious, as is the refusal to renounce a unipolar world, an insistent refusal," Kremlin spokesman Dmitry Peskov told reporters, adding the Russian authorities "cannot accept that the country is treated as a threat to the security of the United States".