A coalition of exiled opposition Iranian groups and figures formed as protests challenged the authorities has collapsed, leaving diaspora representatives grasping for new ways to find long-sought unity.Always outside the coalition was the most organised of Iranian exiled opposition groups, the People's Mujahedin (MEK) which is implacably opposed to Pahlavi but is regarded with disdain by many in the diaspora for siding with Baghdad in the 1980-1988 Iran-Iraq war.