Estonia is warning that Russia appears willing to defend with military force its shadow fleet of aging tankers dodging international sanctions to keep oil revenue flowing.

The Estonian navy escorted the "Jaguar" tanker from the Russian shadow fleet. "To avoid any threat to Estonia's underwater infrastructure, the ship was escorted out of Estonian waters to Russian waters,

A Russian Su-35 violated Estonian airspace on May 13, 2025, to disrupt efforts to inspect a ghost fleet tanker, escalating tensions in the Baltic Sea region.