Time to do something , sanctions waist time as North Korea just a proxy for China. China is the one funding the nuke program with trade,the real cause of this mess. Previous us governments go attack Iraq when weapons of mass instruction didn't even exist, yet sit and watch North Korea until it is too late. If you have the technology to shoot down the nukes , perfect for a big surprise strike wipe out and just get it over with. In long term think how many lives it will save once the mad Korean launches first. Some say he won't and just trying to protect his country so best to do nothing. Look at the situation now , getting worse with time. Something must be done more then useless sanctions. Put some tariffs and punish China with trade at least to send a message.