Blow em up in their silos. Make a drone which could do it? Interesting comment:

This would explain two recent secretive projects.

First is the various attempts by China to build underground "neutrino detectors" in various parts of the country. Before all of the Chinese Academy of Science websites were taken down, you could see pictures of it. They were tunneling quite deep. 100 miles at around average depth of 4,000 feet.

Of course no one does nuclear like the Americans. The Department of Energy's secretive DUNE project...Deep Underground Nuetrino [E] is well under way across Illinois and will eventually extend the accelerator at Fermilab to over 800 miles underground.

This technology is, to use an overused term, the Manhattan Project of the 21st century.

God, this is why they think they can get away with a first strike