IUPAP and the Changing Landscape of Science Diplomacy

Upon invasion of Ukraine by Russia, CERN suspended collaborations with Russia and historically neutral Switzerland brought sanctions against them. Science diplomacy is moving to pay more attention to the implications for scientists in today's changing societal and geopolitical landscapes; distinct from its role in the 1950s and 60s. How do we navigate this while safeguarding the long-term pursuit of global science cooperation to ensure: a) broad access to large-scale facilities; b) diverse participation to further science; and c) the continued ability to build constructive international partnerships? In its pursuit to keep open channels across political and other divides, IUPAP has recently issued a position requiring Russian physicist to use IUPAP as their affiliation for IUPAP sponsored or endorsed conferences. Furthermore, IUPAP and APS have broadened their physics diplomacy to reach beyond physicists and issued statements on violence against women in Iran. I will give a short history of the thousands of year old area of diplomacy, how science diplomacy is evolving, and welcome views on how best to advise our leadership in this complex area.