Wow this is surprising. I guess China couldn't hold out against that much international pressure on her own. I believe that Russian support of the sanction also had something to do with this.
Sanctions are a waste of time. IRAN IS A THREAT> IMO Give one last chance for Iran to refrain from her nuclear bomb aspirations, or we in the West shall bomb the said facilities.
If Iran was to strike back against Israel or cause other mischief through her proxies in the middle east, then we will start to take out her oil producing capacity, as well as other industrial and civilian infrastructure.
I think I would take my chances with the can of worms, rather than having a Iranian version of N.K. but several times worse, in the Middle East.