Consider the military implications of a few billion tonnes of remote controlled mass in earth orbit.
Now consider the implications of a few million square kilometers of mirrors in earth orbit.
Most things are sensitive to both being hit on the head by flying rocks, and to being cooked by extreme heat.
While the primary objective of this project is peaceful, any powerful tool is a double edged sword.
What should become obvious to all very quickly is that the only stable solution is one of international cooperation, with retained independence. Any other strategy is open to invasion, and destruction.