In part as a result of the Biden administration’s shifting policies toward Iran and Washington's decision to temporarily freeze and review weapons sales to Saudi Arabia over the Yemeni war, Ankara is aiming to turn Saudi Arabia’s growing international isolation to Turkey's advantage.
Some Syrian opposition sources claim Turkey might transfer Syrian fighters to Yemen to fight alongside the Saudi-led coalition against the Houthi rebels. The immediate interpretation of these claims might be that Turkey is extending an olive branch to Saudi Arabia following a yearslong frostiness in relations.
The second interpretation might be that Ankara is signaling to Tehran Turkey's disgruntlement over Iranian military activities in Iraq and Syria. Iran believes Russia made too many concessions to Turkey on Syria and has overtly expressed its opposition against Turkish military operations in Iraq, prompting diplomatic bickering between Ankara and Tehran.
Possible Turkish involvement in the Yemeni war might provide Saudi Arabia the face-saving exit from the conflict that Riyadh has been looking for. Reportedly, Turkey’s support might also include Turkish armed drones that have been game changers in the Libyan and Azeri-Armenian conflicts.