Iraq-Syria conflict

Omran was injured in a blast Wednesday evening along with four other children

More than 10,000 people have used the app since its launch in April

US officials have expressed unease about the Saudi-led campaign against Houthi rebels in Yemen

Pentagon spokesman says strike targeted Abu Wahib, IS's "military emir" for the vast western province

Trial first in Germany for war crimes committed over the course of Syria's five-year war

The treasure trove comes from an IS defector who hands over 11,000 personnel files to US television network