On 20-21 August 1968, the Soviet Union and three other Warsaw Pact states invaded Czechoslovakia to stop liberalisation and democratic reforms. Some 250,000 (later 500 000) Warsaw Pact troops, supported by thousands of tanks and hundreds of aircraft, took part in the occupation of Czechoslovakia.
European countries have returned to refiling their gas storages, taking advantage of the warming weather. The replacement of russian gas by LNG works despite the fact that more terminals must be build.
Norway has detained another Russian national for flying a drone. In recent weeks, there have been numerous drone sightings near the Scandinavian country's offshore oil and gas platforms.