кулуары власти(sometimes humorous: The Church of Scotland has lost its influence in the corridors of power, according to an editorial in its own magazine.Andrey Truhachev)
коридоры власти(Working at Westminster had been `beyond my
wildest dreams ", but here she was, in her mid twenties, treading the
corridors of power.A.Rezvov)
высшие эшелоны власти(the higher levels of government where the most important decisions are made: The executive is also versed in the "hidden language" of the biz- ocracy – the fundamentals that touch every swivel chair in every corridor of power.)