CNN
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Until last week, a secretive fleet of ships ferrying Russian oil around the world showed no clear links to the Kremlin. That changed when, in a dramatic escalation, Russia used a fighter jet in an apparent effort to protect one of the tankers thought to be in the fleet.
After the Estonian military contacted the Jaguar – an unflagged tanker sanctioned by the United Kingdom earlier this month – on May 13 in an attempt to carry out checks, a Russian Su-35 fighter jet flew past the ship, inside Estonian airspace, the Estonian Defense Forces said. The military eventually escorted the tanker out of Estonian waters.
“This is something very new,” Estonian…