An internal attempt was made to discredit Gomułka's leadership, but there were aspects of the ongoing witch hunt which he found to be to his advantage and tolerated. In the meantime, irreversible damage to society had been wrecked by the Moczar movement. Gomułka's regime reasserted itself and was saved by a combination of international and domestic factors, including the Moczar faction's inability to take over the party and state apparatus. The Soviet Union, now led by Leonid Brezhnev, was preoccupied with the crisis in Czechoslovakia and not inclined to support personnel changes in the Polish leadership.