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Supporters of Iraqi Shiite cleric Moqtada al-Sadr (portrait top-C) burn a effigy of a member of the Saudi ruling family as others hold posters of prominent Shiite cleric Nimr al-Nimr during a demonstration in the capital Baghdad on January 4, 2016, against Nimr's execution by Saudi authorities. Sunni-ruled Saudi Arabia severed diplomatic ties with Shiite-dominated Iran, its long-time regional rival, after angry demonstrators attacked the Saudi embassy in Tehran and its consulate following Nimr's execution. AFP PHOTO / AHMAD AL-RUBAYE / AFP / AHMAD AL-RUBAYE        (Photo credit should read AHMAD AL-RUBAYE/AFP/Getty Images)
Supporters of Iraqi Shiite cleric Moqtada al-Sadr (portrait top-C) burn a effigy of a member of the Saudi ruling family as others hold posters of prominent Shiite cleric Nimr al-Nimr during a demonstration in the capital Baghdad on January 4, 2016, against Nimr's execution by Saudi authorities. Sunni-ruled Saudi Arabia severed diplomatic ties with Shiite-dominated Iran, its long-time regional rival, after angry demonstrators attacked the Saudi embassy in Tehran and its consulate following Nimr's execution. AFP PHOTO / AHMAD AL-RUBAYE / AFP / AHMAD AL-RUBAYE        (Photo credit should read AHMAD AL-RUBAYE/AFP/Getty Images)

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Zakaria: Supporting Saudi Arabia 'a double-edged sword'

CNN's Fareed Zakaria says the U.S. should generally support Saudi Arabia in it's conflict with Iran, but warns that doing so may cause additional problems.

Zakaria: Supporting Saudi Arabia 'a double-edged sword'

CNN's Fareed Zakaria says the U.S. should generally support Saudi Arabia in it's conflict with Iran, but warns that doing so may cause additional problems.