Even as tensions build in Ukraine, Russia is not a long-term strategic rival for the United States. That’s according to former US Department of Homeland Security Secretary Michael Chertoff, who spoke to GZERO World last September. “The danger with Russia in the short-term is recklessness in the neighborhood,” he said. But even though Moscow may not be the same sort of adversary it was during the Cold War, Chertoff sees big challenges for Washington, especially in cybersecurity and hybrid warfare. “The real danger comes when the red lines are murky or fuzzy,” he added.