Ayatollah Khamenei and King Salman
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Saudi-Iran row: What will the regional fallout be?

The dispute between Saudi Arabia and Iran has continued to escalate following the execution of prominent Shia cleric Nimr al-Nimr by the Saudis.

The longstanding rivalry between Riyadh and Tehran has underpinned wars and political turmoil across the Middle East as both countries back opposing sides.

The BBC's diplomatic correspondent James Robbins looks at the possible fallout across the region after the latest rift.

Produced by Paul Harris and Olivia Lang

  • 06 Jan 2016
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