Sharply escalating tensions in Syria appeared to ease on Thursday following a new ceasefire, a day after Israel bombed Damascus and threatened further attacks under the pretext of "protecting the Druze" amid sectarian clashes in the southern province of Sweida.

The Syrian Observatory for Human Rights, a U.K.-based war monitor, said the clashes started after members of a Bedouin tribe in Sweida province set up a checkpoint where they attacked and robbed a Druze man, leading to tit-for-tat attacks and kidnappings between the tribes and Druze armed groups.

Syria completely reopened its airspace on June 24, its civil air authority said. Damascus Airport's two runways were damaged during the civil war but have since been repaired. The airport was also looted during the chaos of Assad's fall.

Clashes that shook southern Syria this week have killed hundreds of people, including civilians, and drawn in an array of both local and international players, harking back to the dynamics of the country's nearly 14-year civil war.