Britain's head of the Navy, General Sir Gwyn Jenkins, has warned that the UK must reassert itself as a dominant naval power to prevent potential defeat at sea by Russia. He highlighted that Moscow is actively seeking vulnerabilities and could target key undersea infrastructure in a future conflict. Sir Gwyn stressed the importance of improving the Royal Navy's readiness by building more warships and drones to protect the Atlantic. His concerns are based on Russia's advanced submarines, long-range weapons, and systems capable of operating deep underwater. To monitor Russian activity, the Royal Navy has increased its presence in the region, sending two warships each week to track Moscow's movements. In July, the Navy spent 21 days on operations in UK waters and the North Atlantic, a 25% increase compared to the same period in 2025. Several British warships, including HMS Somerset, HMS Tyne, HMS Mersey, and HMS Severn, were deployed to observe Russian vessels, including the frigate RFN Neustrashimy, which conducted gunnery exercises near UK and French waters. Prime Minister Andy Burnham recently met with NATO chief Mark Rutte for the first time in person, as the UK faces pressure to meet NATO's goal of spending 3.5% of its GDP on defense by 2035. Chancellor John Healey had previously resigned over disagreements about funding, arguing that the UK should aim for 3% by 2030. In response to threats from Russia and China, and under pressure from the U.S., NATO allies have agreed to increase defense spending to 5% of their economic output by 2035, with a specific target of 3.5% for core defense spending. Rutte praised the UK for its commitment to security and its leadership in supporting Ukraine against Russia. Sir Gwyn's warnings come at a time when the UK is actively working to disrupt Russia's operations, having sanctioned over 500 vessels. These actions have contributed to a 24% drop in Russian oil and gas revenue in 2025, highlighting the UK's growing influence in countering Russian economic and military strategies.