Not to mention, the US is imposing sanctions that effectively make it nearly impossible to deal in Europe anyway.  The way the US enforces their financial sanctions basically make it so that if you want to do business in the US you need to shun Iran unless you’re working under certain very specific situations, such as…

What’s it matter if the others want to keep it, if the US is forcing an embargo? If Iran is getting royally fucked by one nation welshing on an agreement, there is no benefit to keeping it. 

I mean, Orange Mussolini torpedoed the deal because Obama made it and his racist ass wants to destroy everything the first black president accomplished, not that shocking that Iran no longer feels they are bound by it.