One of them, "Is the US a Reliable Ally?", is an interesting look at the impact of North Korea and Taiwan on the US and China. Another worth looking at, is "Russia’s Disappearing Subs", about the current state and uncertain future of the Russian missile sub fleet. It's not an easy gig: How do you tell a Russian submariner? He's the one that glows in the dark.
Also "Secretive New Space Shuttle?", an article on Boeing's proposed new space shuttle, a lengthened version of the X-37B robotic space-plane, that will carry up to 6 astronauts. With the STS retired, the US has to rely on Soyuz rentals while the Orion capsule/booster system is built, and the Boeing proposal might offer a reasonable-cost way to get back in orbit before the Orion is ready, because it uses the already extant Atlas V heavy booster.