"Islamic State" [IS] activists are "weaponizing Twitter; they're weaponizing social media," warns Ambassador Mark Wallace, one of the founders of the Counter Extremism Project (CEP), which launched in the US in September and is now expanding its presence to London, Brussels and Berlin. Wallace says IS activists with their many accounts tweet between 90,000-100,000 times per day. "As coalitions are forming in governments now to deal with this," Wallace said, "we think the private sector has to have a similar coalition."