Israeli raids targeting arms depots and military positions in eastern Syria killed at least nine Syrian soldiers and 31 allied fighters, in the deadliest such strikes since 2018.
The Israeli air force carried out more than 18 strikes against multiple targets in an area stretching from the eastern town of Deir Ezzor to the Iraqi border, the Syrian Observatory for Human Rights said.
The overnight raids killed nine Syrian soldiers and 31 foreign militia fighters whose nationalities were not immediately known, the Britain-based monitoring group said. They wounded at least 37 others.
Israel routinely carries out raids in Syria, mostly against targets linked to Iran in what it says is a bid to prevent its arch foe from consolidating a foothold on its northern border.
Israel hit around 50 targets in Syria in 2020, according to an annual report released by the Israeli military.
It has carried out hundreds of air and missile strikes on Syria since civil war broke out in 2011, targeting Iranian and Lebanese Hezbollah forces as well as Syrian government troops.
Israel rarely acknowledges individual strikes but has done so when responding to what it describes as aggression inside Israeli territory.
The war in Syria has killed more than 380,000 people and displaced millions more since it erupted after the brutal repression of anti-government protests.