Algerian troops killed a jihadist east of the capital, the defence ministry said, bringing to 12 the number of gunmen killed by security forces in a week.
Syrian troops backed by Russian ground and air forces on Saturday pushed deeper into the Islamic State group stronghold of Palmyra, as Washington considered boosting its anti-jihadist fight in neighbouring Iraq.
Jihadist fighters killed at least six soldiers in western Iraq in an attack Monday that began with five suicide bombers driving explosives-laden vehicles into a checkpoint, officials said.
German police on Thursday arrested a doctor suspected of having recruited a man of limited mental capacity to fight for the Islamic State organisation in Iraq.
The pro-government army commander of Yemen's Aden survived a car bombing in the second city that left one of his bodyguards dead.