This week in research security, we cover the widening scrutiny on international collaborations, including the trial of a former Hydro-Québec researcher accused of economic espionage, and Swiss institutions tightening security checks to prevent "knowledge drain". We also investigate the rapidly evolving role of artificial intelligence in defense, from the UK's AI wargaming project to OpenAI's disruption of accounts used for "authoritarian abuses" targeting Taiwan and U.S. academia. Finally, we analyze how Canadian technology—from heat-masking nanoparticles to surveillance sensors—is intersecting with global conflicts and sanction evasion efforts.