Many countries follow the NRC's lead, but there are exceptions. For example, Canada has regulators who are much friendlier to new reactor development, and Terrestrial Energy, a molten salt reactor company, has spoken highly of them and is making good progress. Moltex recently moved there as well. Russia has two sodium-cooled fast reactors on the grid and is working on more.

But China is the real leader. They're aggressively developing every major GenIV category, including two government-funded molten salt reactors. Terrapower moved their traveling wave reactor to China after giving up on the U.S.