CCTV News reported that from May 26 to June 9, the US military held a large-scale military exercise code-named "Immediate Response 25" in eight countries and regions including Greece, Albania and Bulgaria, and more than 12,000 people participated in the military exercise. The military exercises include live-fire exercises, online exercises, water crossing exercises and exercises for chemical, biological, radioactive and nuclear explosives.

Source: CCTV News