Other disagreements would include that the PCC may have allegedly tended to follow the changes that developed within the official Soviet line during the Cold War, which the FARC-EP did not consider as strictly binding. After the Berlin Wall fell, confusion among the two sides increased. The principle of the "combination of all forms of struggle" was also brought into question at the time by some members of the PCC and UP leadership. The PCC officially broke with the FARC in 1993.