What they have is a nuclear program, which the claim is for electricityThe fact is the mere thought of them having the capability of creating a weapon makes a lot of people scaredTo my knowledge there is no proof they have a quot;nuclear weapon programquot;.
Do you see inside international top secret intelligence agencies?
It will reflect heat but it also conducts heatA sandwich type is available that works very wellIt has aluminum sheets with an insulator between themThis helps keep heat in in the winter and heat out in the summerIt can be placed on top of the insulation over the ceiling.