This is weird:

Here’s a short, but remarkable list of all „events“, (atmospheric, underground, underwater), subdivided by countries. It has been published by the Swiss Seismological Service:

USA: 1039
Soviet Union: 718
France: 198
China: 45
United Kingdom: 45
India: 3
Pakistan: 2
North Korea: 1
Unknown: 1 (!)

For each country, lists with detailed information are available here.

NO NUKES!