Tensions Worsen Between Iran and Saudi Arabia.

More on the story about Iran and Saudi Arabia now where the crisis is spiralling. A number of Saudi's allies have severed or downgraded ties with Iran. The move follows Iran's protests about the Saudi execution of a Shia cleric Nimr al-Nimr and the subsequent attack on the Saudi embassy in Tehran. Robin Wright is a joint fellow at the US Institute of Peace and the Woodrow Wilson Centre and has written several books on Iran. She says it is the worst possible moment for tensions to erupt.