Why Saudi Arabia and Iran are bitter rivals

The decades-old feud between them is exacerbated by religious differences. They each follow one of the two main branches of Islam – Iran is largely Shia Muslim, while Saudi Arabia sees itself as the leading Sunni Muslim power.

https://www.bbc.com/news/world-middle-east-42008809

Watch: BITTER RIVALS
Iran and Saudi Arabia

Enemies, alliances and animosity in the Middle East

The friendships and enmities among countries, political groups and militant organisations in the Middle East

https://www.economist.com/graphic-detail/2016/01/07/enemies-alliances-and-animosity-in-the-middle-east?fsrc=scn%2Ffb%2Fte%2Fbl%2Fed%2Fgridofgrievancesenemiesalliancesandanimosityinthemiddleeast

Second source, another visualization: Syria Visualizations Illustrate Complexity and Division

https://rockcontent.com/blog/syria-visualizations/