In the face of the changes that unfolded in the rest of Eastern Europe in 1988 and 1989, the PCR retained its image as one of the most unreconstructed parties in the Soviet bloc. It even went as far as to call for a Warsaw Pact invasion of Poland after that country's Communists announced a power-sharing agreement with the Solidarity trade union—a sharp reversal of its previous opposition to the Brezhnev Doctrine and its vehement opposition to the invasion of Czechoslovakia 21 years earlier. It initially appeared that the PCR would ride out the anti-Communist tide sweeping through Eastern Europe when on 24 November—two weeks after the fall of the Berlin Wall and the same day that Communist rule effectively ended in Czechoslovakia—Ceaușescu was reelected for another five-year term as General Secretary.