This “counter-navy,” rather than the Black Sea Fleet naval forces themselves, is the backbone of the maritime challenge in the Black Sea basin. The combination of Crimea-based, active, and passive mobile, long-range, over-the-horizon radars allows for excellent air and surface situational awareness. The anti-air and anti-surface missile batteries are among the most advanced on Earth, and their mobility makes them extremely difficult to target and destroy. Because they are land-based, they can also operate on interior lines of communication and are more readily resupplied than are ships at sea. Further, the presence of several dozen tactical fixed-wing strike and fighter aircraft particularly augments Russia’s anti-surface firepower in the Black Sea. In short, compared to surface warships and submarines, these systems offer excellent detection capabilities, a comparatively similar amount of punch, and a higher degree of survivability for a fraction of the cost. On their own, they are a significant sea denial challenge, but when coupled with the Russian Black Sea Fleet’s recently improved capabilities, they tip the regional military balance firmly in Moscow’s favor