"one purpose of nuclear energy is to avoid entanglements in energy wars".

Less Generous reading:

"Having had both, it is our opinion that nuclear accidents are vastly less painful than nuclear warheads.
 The future is uncertain, and thus we judge that maintaining a large nuclear energy sector so that we can quickly  Just-in-Time  manufacture some warheads in the event politics in China/US/ECT goes seriously non-linear is a nessesary insurance policy/deterrent, while being much less costly and problematic than being an actual nuclear weapons state".

It is possible they actually intend both readings, too.