The largest air exercise in NATO history, "Air Guardian-2023," will be held in Germany, the Czech Republic and other countries from today. The exercise was led by Germany and was attended by 25 countries, including NATO members and non-NATO members such as Sweden and Japan. About 10,000 soldiers and about 250 aircraft took part in the show, designed to simulate the response of NATO members to external attacks. The exercise will last until the 23rd. (CCTV military)