http://adf.ly/1SZdI2, http://adf.ly/1XIsTW, http://www.ctvviet.com, http://www.nhac24.com <br />As President Obama travels to the Middle East, we're looking at what sustains -- and what strains -- relations between the U.S. and longtime ally Saudi Arabia. A CNN reporter takes a trip inside Pyongyang amid increased sanctions against North Korea. And we get the chance to sit inside the spacecraft that could one day take U.S. astronauts back to deep space.
