Original: On December 31, 1981, PÃ rez de CuÃ llar succeeded Kurt Waldheim as Secretary-General and was re-elected for a second term in October 1986.
Simplified: On December 31 1981, PÃ rez de CuÃ llar followed Kurt Waldheim as Secretary-General and was re-elected for a second term in October 1986.