Washington should take more aggressive “grey-zone” strategies – warfare just short of armed conflict – to tackle China and Russia, according to a group of US military strategists including former defence chief Chuck Hagel. In recommendations published by US think tank the Atlantic Council last month, the strategists said China and Russia had conducted unconventional offensives against the US, including online cyberattacks, and misinformation and disinformation campaigns. As a result, the US military must “defend more aggressively and take offensive actions in the grey zone”, especially in the areas like information, intelligence and cyberspace, they said. Moreover, such hybrid warfare…