A new maritime confrontation is unfolding in the Atlantic after France boarded and detained the Russian-linked tanker Tagor during a sanctions enforcement operation. French President Emmanuel Macron said the mission was conducted in accordance with international maritime law and coordinated with partners including the United Kingdom. Paris says the operation targeted vessels linked to Russia's so-called "shadow fleet," which Western governments accuse of helping Moscow move sanctioned oil exports. The Kremlin has reacted angrily, with spokesman Dmitry Peskov describing the detention as "illegal" and "bordering on international piracy." The incident has intensified tensions between Russia and Western nations as sanctions enforcement moves beyond diplomatic pressure and into high-profile maritime operations.