The Black Sea has been called a Russian lake before. Perhaps it was again after 2008: Russia used the Black Sea for its invasion of Georgia, as a key avenue for attack during the annextion of Crimea (2014), for actions in Syria (2015 onwards), and for the latest attacks on Ukraine (starting in 2022). Yet despite a burgeoning military presence, the Black Sea is now a leading stage for competition between regional powers - not just Russia and Ukraine, but also Turkey, Georgia, Bulgaria and Romania too. Indeed, Turkey plays a really significant role both at sea and ashore, able to act as a regulator on Russian military activities at sea - but this is best done in concert with NATO and the EU. Natia Seskuria, founder and executive director of the Regional Institiute for Security Studies, talks to Peter about Russia's aspirations in the Black Sea, and is still able to "walk and chew gum" in the region. Natia talks about what sort of 'grey zone' activity Moscow continues to engage in, how effective it is, and what measures could be taken to counter Russia - if the West really wanted to.