At least 18 civilians have been killed, while at least 27 others were wounded, in a car bomb attack in the northern Syrian border town of al-Bab, according to the Turkish defence ministry.
At least four Afghan civilians have been killed and four American troops injured as a car bomber attacked a foreign military convoy in the capital Kabul.
Al-Shabab gunmen and a car bomber have struck a religious center in central Somalia, killing a cleric and at least 14 of his followers, a police officer says.