Gorbachev was aware that the Politburo could remove him from office, and that he could not pursue more radical reform without a majority of supporters in the Politburo. He sought to remove several older members from the Politburo, encouraging Grigory Romanov, Nikolai Tikhonov, and Viktor Grishin into retirement. He promoted Gromyko to head of state, a largely ceremonial role with little influence, and moved his own ally, Eduard Shevardnadze, to Gromyko's former post in charge of foreign policy. Other allies whom he saw promoted were Yakovlev, Anatoly Lukyanov, and Vadim Medvedev. Another of those promoted by Gorbachev was Boris Yeltsin, who was made a Secretary of the Central Committee in July 1985. Most of these appointees were from a new generation of well-educated officials who had been frustrated during the Brezhnev era. In his first year, 14 of the 23 heads of department in the secretariat were replaced. Doing so, Gorbachev secured dominance in the Politburo within a year, faster than either Stalin, Khrushchev, or Brezhnev had achieved.