Hezbollah involvement in the Syrian civil war

Hezbollah involvement in the Syrian civil war has been substantial since the beginning of armed insurgency phase of the Syrian civil war in 2011, and evolved into active support for Syrian government forces and troop deployment from 2012 onwards. By 2014, Hezbollah was deployed across Syria. Hezbollah has also been very active in preventing Al-Nusra Front and Islamic State penetration into Lebanon, being one of the most active forces in the Syrian civil war spillover in Lebanon. Hezbollah's involvement in Syria came to an end with the fall of the Assad regime as a result of a renewed rebel offensive in late 2024, leading to clashes between Hezbollah and the new Syrian transitional government.

In the past, Hezbollah has served a strategic arm of Iran in the region, playing a key role in the Iran–Israel and Iran–Saudi Arabia proxy conflicts. On a number of occasions, Hezbollah weapon convoys in Syria and Syrian-Lebanese border areas were attacked, presumably by the Israeli military. Hezbollah convoys and militant camps have also been attacked by various Syrian rebel factions.

Hezbollah's image in the Arab world – especially in Syria and Lebanon – has been greatly tarnished due to its sectarian activities throughout the course of the Syrian civil war. Major religious leaders and activists, Sunni and Shia alike, have condemned Hezbollah, with many former supporters of Hezbollah becoming its fervent opponents for its stance in Syria. Shi'i cleric Subhi al-Tufayli, the group's founder and principal architect during 1980s, fiercely denounced Hezbollah for abandoning its founding principles and accused it of serving the hegemonic ambitions of Iran and Russia.