 Complete the following phrase:  Turkey and Saudi Arabia initially found themselves in alliance when the Arab Spring erupted, mostly because of the Syrian civil war as Ankara and Riyadh were openly opposing Bashar al-Assad, and thus Saudi Arabia and Turkey both ficed various anti-Assad forces in the conflict hoping to drive the Syrian dictator out. However, Turkey also demonstrated support for Muslim Brotherhood MB, which was opposed by Saudi Arabia, and this had created an uneasy sentiment among Riyadh. In 2013, the 