ISIS claims responsibility for ambush that killed 20 Syrian soldiers

ISIS claimed responsibility for an attack on a bus carrying Syrian soldiers in eastern Syria.
The ambush killed at least 20 soldiers and wounded 10 others.
ISIS continues to carry out attacks in Syria despite being territorially defeated in 2019.
The extremist group previously controlled large parts of Syria and Iraq and declared a caliphate in 2014.
Experts say the recent attacks may not indicate a full resurgence of ISIS in Syria.