The ITER fusion research has always enjoyed a level of international collaboration unusual in other scientific areas. In 1987 under the auspices of the IAEA the representatives of the world's four major fusion programs developed a detailed proposal for ITER Conceptual Design Activities that will end in December of 1990. The ITER joint activities started at Garching (FRG) in May 1988 and are now close to completion. The conceptual design being produced takes into account the scientific knowledge derived from the operation of the tokamaks around the world and upon technical know-how flowing from the extensive technology R&D programs of the four partners. The ITER Concept is characterized by a double null plasma configuration, plasma current of 22 MA, the use of superconductors for the magnetic system, full remote maintenance of device, capability of producing most of the tritium needed for it's operation and having steady state operation as an ultimate goal. Completion of the engineering design as well as feasibility demonstration is expected by 1995. Construction should start by 1996 and operation by 2003.