Zionist Occupation Government or Zionist Occupied Government (abbreviated as ZOG) is an antisemitic conspiracy theory which holds that Jews secretly control a given country, while the formal government is a puppet regime.
The expression is used by antisemitic groups such as white supremacists in the United States and Europe, ultra-nationalists such as Pamyat in Russia, and various far-right groups, including some in Poland.
The word "Zionist" in "Zionist Occupation Government" should not be confused with the ideology of Zionism, the movement for support of a Jewish state in the Land of Israel. As the conspiracy theorists chiefly name countries outside that area, the usage of Zionist in this context is misleading, and intended to portray Jews as conspirators who aim to control the world, as in the forged Protocols of the Elders of Zion.
Read more about Zionist Occupation Government: History