Dr Tarja Cronberg was Chair of the Iran delegation in the European Parliament from 2011-2014, and a member of the Committees for Foreign Affairs and Security and Defence. She has been a spokesperson on Security and Defence for the Greens in the European Parliament. She was also a substitute member of the Russia delegation and of the NATO delegation. Cronberg is a campaigner for nuclear disarmament and believes that nuclear weapons should be removed from the European territory and that the European Union should become a nuclear-free zone.