We just announced that we are sending a balistic missile system to Guam, selling some planes to SK, and a few other things. They also shut down the SK entrance for the joint industrial complex, which is a big deal because that shuts out SK workers and is the main place where SK and NK actually work together.
http://www.cnn.com/2013/04/03/world/asia/koreas-tensions/index.html?hpt=hp_inthenews
http://www.cnn.com/2013/04/03/world/asia/koreas-tensions/index.html?hpt=hp_inthenews