A surprise nuclear attack

Lunching rules
The following nations would not use atomic arms unless in revenge for being nuked them selves.
 * 1) USSR
 * 2) China
 * 3) India

Would not use them unless there invaded by the nation they are to nuke.
 * 1) Russia
 * 2) France
 * 3) United States

Woulds use them to make wars a lot easier or against rogue states like N. Korea.
 * 1) United Kingdom

Would not use them unless there invaded by the nation they are to nuke, but is willing to do a suppirise attack on India.
 * 1) Pakistan,