Four days of clashes between pro-government gunmen and members of a minority sect in Syria have left nearly 100 people dead and raised fears of deadly sectarian violence.

Israel's PM says it will "not allow any threat" to the minority in Syria after sectarian clashes in which dozens were killed.

Israel escalated its military campaign in Syria by launching airstrikes in the Damascus countryside and issuing threats against the Syrian leadership, citing unrest in Druze-populated districts earlier this week.