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fatbunyip t1_j9j5tq4 wrote on February 22, 2023 at 10:10 AM

Reply to comment by Alastair_Campbell in Russian President Vladimir Putin unwittingly accelerated the European Union’s green transition with his war in Ukraine, with the 27-nation bloc reducing its dependency on Russian fossil fuels and increasing its renewable energy use over the past year, the EU’s climate czar said Tuesday. by MrGuttFeeling

From the Oxford dictionary:

Czar : an official whose job is to advise the government on policy in a particular area

It's a perfectly acceptable use of the word, and is very common. It has nothing to do with whether they have absolute authority or not.