BEIRUT—A series of Islamic State attacks in southwest Syria killed and injured scores on Wednesday, a show of deadly force in an area where the government is pressing an offensive against an affiliate of the extremist group.
A suicide bomber on a motorcycle struck a vegetable market in the provincial capital of Sweida as vendors arrived in the early morning, state media said. It said three other suicide bombing attempts were foiled, but an outside monitoring group said they hit their targets, including at two busy traffic...