Its a tircky one. Rules state one nation per IP. If you share an IP you face the prospect of deletion. Never interacting with other people on the same college will help, but there is no guarantee.
While this probably began as a suggestion and should have been posted in the suggestion box, its now become a discussion on the use of nukes, so its probably in the right room.
Look in your extended display, and it will tell you if you are an older more stable nation or not. As for the hidden factors...... (we wont tell you that)