Summary: A chemical attack has killed at least 58 people, many of them children, in north-west Syria. The White House says it's confident the attack was the work of the Assad government, but it denies any involvement.
Summary: A chemical attack has killed at least 58 people, many of them children, in north-west Syria. The White House says it's confident the attack was the work of the Assad government, but it denies any involvement.