Abstract The IFAC TC on “Supplemental Ways for Improving International Stability – SWIIS” is one of the longest situated in IFAC. According to first ideas during the IFAC World Congress in Kyoto 1981 this IFAC – at that time - Working Group organised in 1983 the first Workshop in this highly interdisziplinary field in Austria. Meanwhile a Technical Committee in IFAC, SWIIS was always a bridge between (control) engineers and various other disziplines to open IFAC to other related fields. Because of the 25 th anniversary a short history of SWIIS as well as a outlook in the future, emphasising new topics, will be given in this paper