Iran's potential future nukes are hardly the reason for the aerial nuclear race in case where one aggressive Lilliput state in the region already has more nukes than China and India have. Nuclear free means everybody is nuclear free. If one state has the "right" to defend itself with nukes, everybody has the same "right".
North Korea insists it 'regrets,' not apologizes, over mine blast that killed 2 South soldiers (AP)
from the article: Pakistan ready to give Saudi Arabia nuclear bombs, experts say