Which group, known for leading the Syrian rebels, declared Damascus "liberated" and announced the end of Bashar al-Assad's government, marking the conclusion of the 54-year Assad dynasty that began in 1971 under Hafez al-Assad and continued through Bashar al-Assad's 24-year rule starting in 2000?
1
Free Syrian Army
2
Hayat Tahrir al-Sham
3
Islamic State
4
Al-Qaeda