Senior leader in the Islamist group Hay'at Tahrir al-Sham led military operations in the campaign that ousted the Assad regime.
When the regime began to collapse, the rebels returned to march on Damascus. This could provide Jordan with key influence in Dara’a and other areas in southern Jordan.
Whether Julani sees himself as a more moderate version of Assad or as the political head of a democratically elected, representative government is the question.
Asma al-Assad moved to Syria in 2000 and married Assad in the same year at the age of 25.
Fidan's visit comes amid fighting in northeast Syria between Turkey-backed Syrian fighters and the Kurdish YPG militia.
In an interview with 'Asharq Al-Awsat', Ahmed al-Sharaa said that the revolution in Syria ended with Assad's fall and that he did not want it to destabilize the Arab world.
Syria's Kurds are tilted against HTS, and are in 'deep, deep trouble' with Turkey.
A weekly selection of opinions and analyses from the Arab media around the world.
The visit comes as Western governments are gradually opening channels to HTS and its leader Ahmed al-Sharaa, and start debating whether or not to remove the terrorist designation on the group.
The EU is also moving to reopen its mission in Syria, according to EU Foreign Policy head Kaja Kallas, France 24 reported.