Currently, six countries possess nuclear submarines, including the United States, Russia, China, Britain, France, and India. However, the geopolitical landscape is set to change with the recent partnership between the US, Britain, and Australia, which will provide Australia with five nuclear submarines by 2030. China's high ambition in the Pacific Ocean has spurred this development, leading to concerns of a shift in the strategic balance and the potential for nuclear arms. The number of nuclear submarines possessed by each country is difficult to confirm, but, according to sources, US having 67, Russia 31, China 12, Britain 10, and France and India with 9 and 1 respectively. Nuclear submarines are highly valued as they are the most powerful and stealthy weapon in a Navy's arsenal, able to remain submerged for long periods and launch missiles without detection. With multiple countries possessing these submarines, the geopolitical landscape is becoming increasingly complex and potentially volatile.