 This method entailed strong propaganda against the movement and deploying Secret Services (SB) to go undercover and infiltrate Solidarity headquarters in the hope of creating internal conflicts within the opposition.General Jaruzelski was not fully satisfied with the plan, and, in case of failure, already planned radical actions involving the army.Stanisław Kania warned Brezhnev that an armed intervention from the Soviet side to aid Jaruzelski would be met "with a violent reaction, or even with a national uprising" that would shake the politics of the Eastern Bloc.