| Status | Country | % Correct |
|---|---|---|
| Party to NPT | China | 100%
|
| Party to NPT | France | 100%
|
| Non-party to NPT, declared | India | 100%
|
| Party to NPT | Russia | 100%
|
| Party to NPT | United Kingdom | 100%
|
| Party to NPT | United States | 100%
|
| Non-party to NPT, declared | North Korea | 95%
|
| Non-party to NPT, declared | Pakistan | 95%
|
| Non-party to NPT, undeclared | Israel | 90%
|
| Hosting American weapons | Turkey | 81%
|
| Hosting Russian weapons | Belarus | 76%
|
| Hosting American weapons | Italy | 76%
|
| Hosting American weapons | Germany | 71%
|
| Former possession | Ukraine | 71%
|
| Former possession | South Africa | 52%
|
| Former possession | Kazakhstan | 48%
|
| Hosting American weapons | Netherlands | 43%
|
| Hosting American weapons | Belgium | 38%
|