Kevin Warsh walked into the White House East Room on Friday morning as a private citizen. He walked out as the most powerful central banker on earth.

ARLINGTON, Texas — As the high-stakes Group F opening match between the Netherlands and Japan unfolds, global tactical analysis is heavily focused on the pitch. Pundits are frantically dissecting the structural friction between Ronald Koeman’s possession-heavy Dutch side and Hajime Moriyasu’s hyper-efficient, transitional Japanese counter-attack. Yet, as the action plays…