The international gun control movement keeps working on gun grabbing with an eye to eventually killing off the 2nd amendment. It's a King Canute enterprise because the technology for distributed manufacturing is coming and guns are inevitably going to be on the list of things to build right along every other tool. Once every man can be a gunsmith simply by hitting print on a computer, the foolishness of control efforts via law instead of via personal responsibility will have been fully exposed.
A culture of responsible use will never grow in a regime where weapons are unavailable. Upcoming technology (home replication machines) will make it technically feasible to make primitive and eventually quite sophisticated firearms with plans inevitably available for free over the Internet. This is going to make any sort of international treaty regime impossible to enforce as home replication machines are also obvious technology for poverty reduction in the 3rd world.The first self-replication of a home replication machine in May 2008 was a warning shot that has so far not been heard widely. The rep-rap project is a worthy one but they aren't kidding when they say that it's a disruptive technology.
The only solutions left are to embrace poverty and deny access to replication as well as guns or to create a culture of responsibility that can handle this upcoming disruptive technology. Cultures of responsibility take a long time to take root without an opening blood bath. We might have enough time at this point if we start soon but it is pretty obvious that the same international gun controllers who want to end-run the US' 2nd amendment protections are not going to accept this idea with open arms.