Outer Space Treaty in jeopardy - New frontiers for arms race?

As movie actor Michael Caine might say, “not a lot of people know this”, but we have just passed a remarkable milestone in the history of space exploration.

It is 50 years since the Outer Space Treaty came into force. It has been the cornerstone of international space law ever since, designed to prevent the extension of an arms race into outer space.

Ninety countries signed the OST, binding themselves to an agreement that prohibited the deployment of weapons of mass destruction in space.