leave the office of(Tymoshenko, a leader of Ukraine's western-leaning Orange Revolution six years ago, has reverted to being the country's chief opposition politician and rival to President Viktor Yanukovych since leaving the office of prime minister last year. TG Alexander Demidov)
resign as leader of(или руководителя организации: "I've therefore spoken to His Majesty the King to notify him that I am resigning as leader of the Conservative Party." – Liz TrussART Vancouver)
