As Ukraine's military and citizens battle Russia's advancing troops, the country has opened a new front in the fighting - using tech expertise to rally Silicon Valley's support and undermine the enemy. Digital minister Mykhailo Fedorov is leading the charge, but some of his tactics are proving divisive.
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From his underground shelter in a secret location in Kyiv, Ukraine's youngest cabinet minister is waging a digital war on Russia.
Using his preferred weapon - social media - Mykhailo Fedorov has been urging chief executives of big businesses to cut ties with Moscow. He's also taken the unprecedented move of setting up a volunteer "IT Army of Ukraine" to launch cyber-attacks against "the enemy".
