Intentional electromagnetic interference (IEMI) is an extension of the work by the well-known electromagnetic compatibility (EMC) and electromagnetic interference (EMI) communities. Additional threats have recently surfaced that suggest that various individuals and groups can build devices to intentionally cause electronic systems to fail. The field levels that can be used by these people are much higher than the commonly used EMC standards, so that additional research and hardening is required to prevent electronic failures in the infrastructure supporting our society. There are a number of different people who threaten that infrastructure, varying from the person who violates the call to turn off his computer on the airplane, to the state-sponsored weaponeer. Community response also varies with the threat. URSI's role is to encourage research in this important area.