Answering all the questions about Video Assistant Referee.  

The video assistant referee is a match official in association football who reviews decisions made by the head referee. Following extensive trialling in a number of major competitions, VAR was first written into the Laws of the Game by the International Football Association Board in 2018. 

The International Football Association Board is the body that determines the Laws of the Game of association football. IFAB was founded in 1886 to agree standardised Laws for international competition, and has since acted as the "guardian" of the internationally used Laws.

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