On May 13, a mysterious ship named Jaguar sailed through waters near Estonia in the Baltic Sea. This ship, once registered under Gabon’s flag but now sailing without any national flag, was believed to be part of a “shadow fleet.

MILAN — Russia’s detention of a Greek-owned ship that departed from Estonia – days after Estonian forces tried to intercept a Russia-bound tanker – signals Moscow’s willingness to deploy military power more overtly to protect its shadow-fleet, a vital pillar of its war economy, experts say.

The Liberian -flagged tanker Green Admire has been released by Russian authorities after being detained in Russian territorial waters on Sunday. The vessel had departed Estonia's port of Sillamäe on Saturday evening, en route to Rotterdam, when it was stopped near the Gulf of Finland, Estonian Public Broadcasting (ERR) reported.