The Belarusian Ministry of Defense claims that the exercises are for training the Air Force in defense and reconnaissance work and that they will have a so-called "defensive nature", reports Reuters.
Ever since Putin helped Lukashenko cheat himself another term, Belarus has been in debt to Russia.
Experts see it as one of the reasons for the increased military cooperation between the countries.
It is stated that it is not likely that Belarus will enter the war on the side of Russia from several sides, as the country does not have enough military resources.
On the other hand, the cooperation spreads a fear in Kyiv and the outside world that Russian troops will now have the opportunity to attack Ukraine from Belarus.
Ukrainian President Zelenskyy has expressed last week that Ukrainian forces will be ready at the border.
Hear Bert Sundström explain what the air force exercises mean for the countries in the clip above.