The Bulletin of the Atomic Scientists calls for a missile test ban to supplement the Missile Technology Control Regime (MTCR). Interestingly the article puts the MTCR in the context of the Reykjavik Summit, where Richard Perle famously stopped President Reagan from agreeing to sweeping arms control limitations with the Soviets. Perle was also instrumental in limiting the MTCR, mainly by trying to get super strong controls that other countries would not agree to. It was a typical case of the best being the enemy of the good. What we got was worse than if the US had had a more flexible negotiating position.
Anyway, the good news is that the MTCR is still alive and is probably the strongest regime controlling missile proliferation. It could have been stronger, but at least we got something.