How far the USA’s withdrawal from the ABM Treaty and the recent plans for a National Missile Defense opened the door to further militarization of Space? Outer space is an internationalized common area beyond national jurisdiction of individual States. Security in space must therefore be the common security of all States. The concept of common security in outer space leads to a complete ban of active military uses of space and to an arms control regime for anti-missile defense. By applying these clauses to the subject of international security in outer space, the analysis will further draw patient conclusions for the establishment of an effective regime for safeguarding the peaceful uses of outer space.
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