Obama’s home stretch to focus on foreign policy

At a moment when much of the world is watching Greece, one of the most critical moments in Barack Obama’s presidency is also fast approaching.
Within a few days, the US president could secure not just a historic nuclear agreement with Iran, but also sign into law domestic legislation that could enable two potentially landmark international trade agreements — allowing the country to help write what US officials have called “the rules of the road” for the 21st century world economy.