US embassies in capitals across the Middle East on Saturday warned American citizens to beware of an “unforeseen escalation” in the regional conflict and urged them to be ready to leave. The messages urged citizens to check flight details and to follow safety advice from local authorities Key points and original sources are listed below.

• US embassies in capitals across the Middle East on Saturday warned American citizens to beware of an “unforeseen escalation” in the regional conflict and urged them to be ready to leave. The warning, posted online by US embassies in Bahrain, Iraq, Israel, Jord...S1S3

• The messages urged citizens to check flight details and to follow safety advice from local authoritiesS2