The Obama administration is hammering on the subject of Nuclear Security and Arms Control. The Arms Control Treaty, the refinement of US nuclear strategy, and the Summit are all a seamless effort to bolster nuclear security for the World. Mr. Ahmadinejad gets the point and does not like it. Next step will be more sanctions on Iran.
Police arrest 18-year-old Palestinian suspected in Old City stabbing (Haaretz)
from the article: Medvedev: Israeli strike on Iran could spark global catastrophe