A web of undersea cables connects our lives and our global economy. As U.S. adversaries are accused of sabotage, they're proving to be targets of choice.

A full-scale invasion of Poland, in the manner Russia invaded Ukraine, is rather not viable, given Russia's current military capacities, Poland's military build-up and the collective defense guarantees of NATO membership, Michnik said, "however, this reality must not diminish Poland’s ongoing preparation."

The chief of Russia's general staff Valery Gerasimov told President Vladimir Putin on Thursday that Russian forces had taken control of the Ukrainian city of Kupiansk.