Overview: For many Russian oligarchs, their superyachts are their most prized assets. But when Vladimir Putin ordered the invasion of Ukraine earlier this year, those superyachts soon became targets for an unprecedented set of sanctions coordinated by the US, EU, and UK authorities. Some yachts were seized or frozen, others tried to escape in a hurry, and some simply disappeared. Our World tells the inside story of the game of cat and mouse between the yacht hunters and Russia's wealthy set.