UK authorities identify the attacker as 52-year-old Briton, Khalid Masood.
A police officer from Salaheddin province, where Samarra city is located, says five attackers were killed.
A car bomb exploded near a hospital in central Baghdad, killing at least nine people, police said.
At least 18 dead and over 20 injured in an attack in Ain al-Tamer, a town near Karbala in Iraq. DAESH claims responsibility through its news agency.
A 17-year-old Afghan refugee attacked passengers on a German train with an axe.
The six gunmen who killed 20 hostages were from affluent backgrounds and attended the country's top schools.
DAESH's chief military leader in Anbar province, Abu Wahib, was killed along with three other members near the town of Rutba.
DAESH terrorists captured the main gas field and its facility, where Syrian regime troops were stationed, in eastern Syria, killing 30 soldiers.
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