Although not the first vetoed ( China vetoed the third term of Kurt Waldheim in 1981 ) , Boutros-Ghali was the first and only UN secretary-general not to be elected to a second term in office . Although not the first vetoed ( China vetoed the third term of Kurt Waldheim in 1981 ) , Boutros-Ghali was the only UN secretary-general not to be elected to a second term in office .