The story: The downfall of Iran’s longtime ally Bashar Al-Assad in Syria has put the spotlight on Iranian-Turkish rivalry in the region. Some commentators in Iran accuse Turkey’s president of wanting to expand influence as far as the Ottoman Empire’s borders. Others argue that Recep Tayyip Erdogan is overambitious.

The coverage: Turkey was among the first countries to welcome the Dec. 7 fall of the Syrian government, sending senior officials to...