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

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.

Sectarian violence has erupted again in Syria, raising fresh doubt on the ability of the new Islamist rulers to control armed factions and calm tensions.