Although it isn’t my specialty, arms control is a very interesting field of study. I can’t say I know all of the inner workings behind it, but the seismic impact of a nuclear bomb test is a stimulating read .
Enter ArmsControlWonk, one of the more detailed blogs I’ve seen on the topic of arms control. Everything from statement analysis of foreign governments to the afore-mentioned seismic activity readings. An older article found on the site concerns a photo that is picked apart by the author and readers to determine the type of rocket used to deliver a satellite to orbit.
Definitely a bookmark-worthy site.