The United States is closely monitoring the development of defense relations between Russia and China, which have strengthened in recent years, including joint exercises on land, in the air, and at sea, according to the US National Security Council’s Strategic Communications Coordinator, John Kirby. According to him, despite the deepening cooperation between China and Russia, the two countries have historically not fully trusted each other, both in the region and on the global stage. “We’ll watch it like we watch all exercises. These are two nations that don’t have a long history of working we…