Even before his announcement that Syria is not looking for a confrontation with Israel, the leader of HTS, Ahmad al-Sharaa, faced harsh campaigns from Iran sympathizers and anti-Islamist actors.
If Julani is to remain in power for the coming years, he could play a transformative role in Syria and the Middle East.
The country's new de facto leader, Ahmad al-Sharaa, faces a massive challenge to rebuild Syria.
The letter complained of Israeli strikes in the country - despite Israel targeting weapons facilities belonging to the Assad regime.