China is emerging as a major player in global diplomacy - including in the Middle East. In 2023, it helped re-establish diplomatic ties between Riyadh and Tehran. While it is not officially mediating efforts to end the ongoing war - both the US and Iran are looking to China to help de-escalate. So, can it propel the two sides towards that goal? And if China makes a direct push to stop the fighting - how will its economic clout affect the course of negotiations?