Two people have reportedly been killed after several tornadoes ripped through states in the southern and central United States.
The deaths were reported in the Oklahoma town of Quapaw, while officials in Arkansas have also spoken of "mass casualties" near the city of Little Rock.
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Sixteen people were injured when a train crashed into a railway station buffer on Monday.
"Our ability to pre-empt or respond to threats will be eroded if we don't keep up with our adversaries."
"You are one of the silence breakers and we all owe you a debt of gratitude."