European countries have agreed to stop importing Iranian oil as of Sunday. This could make it harder for Iran to find markets for its crude. Iran has been filling up tankers off its coast, but analysts say it could run out of storage capacity. This photo shows oil tankers off Iran's coast in January. Kamran Jebreili/AP hide caption

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The Egyptian Presidency released this image of Mohammed Morsi giving a speech to tens of thousands of people in Cairo's Tahrir Square on Friday. Morsi was sworn in as Egypt's president on Saturday. Sherif Abdel Monaem/EPA /Landov hide caption

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An image grab taken from Egypt's Nile TV shows Egyptian President Mohamed Morsi (center) taking the oath of office during the official swearing-in ceremony at the Constitutional Court in Cairo on Saturday. -/AFP/Getty Images hide caption

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People walk through Hamidiyah market in Damascus, Syria, Feb. 28. The merchants of this landmark bazaar were once ardent supporters of President Bashar Assad. That's no longer the case. Bassem Tellawi/AP hide caption

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May 26, 2012: In this picture provided by the Syrian opposition's Shaam News Network, people watch the mass burial of victims in Houla. AFP/Getty Images hide caption

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A Syrian youth flashes the victory sign as he stands in front of a building that was covered with anti-government graffiti — though local authorities painted over it — in the town of Duma, outside Damascus, in February. AFP/Getty Images hide caption

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