Wednesday's test used chemicals and radioisotopes to validate new predictive explosion models" that can help detect atomic blasts in other countries, Bloomberg reported, citing the Department of Energy.

Russian lawmakers announced their intention to revoke the ratification of the Comprehensive Nuclear Test Ban Treaty. The US tests were conducted hours after members of the State Duma, Russia's lower house of parliament, voted to withdraw ratification of the Comprehensive Nuclear Test Ban Treaty, which prohibits any nuclear weapon test explosion or any other nuclear explosion anywhere in the world.

Here is a 149 page copy of the Comprehensive Nuclear Test Ban Treaty.