Maritime technology company Windward identified the area as a hub for smuggling oil. Cargo ships and car ferries cross the Kerch Strait, an area of "dark activity," according to marine technology company Windward. So that's definitely moved that focus into, okay, I'm now going to manipulate that signal," he told CNBC by video call. This can be done in a number of ways, a Spire spokesperson told CNBC by email. "If you're in the insurance industry, and you're not paying attention to this, you really need to start paying attention," Swift told CNBC by video call.

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Persons: John Lusk, Christopher Swift, Foley, Lardner, We're, Lusk, Ami Daniel, Daniel, Good Hope, Iain Goodridge, Spire's, that's, I'm, " Goodridge, OFAC, Swift Organizations: Windward, Europa Press, Getty, Maritime Organization, AIS, Spire Maritime, Government, CNBC, Russia, Anadolu Agency, Venezuela, Spire, U.S . Treasury Department Locations: Morocco, Maritime, Ukraine, U.S, Russia, Kerch, Windward, Arabian, Venezuela, The U.S, East Asia, Angola, Venezuela's, South Africa's, Good, China, Malaysia