At least 26 people have died in Mississippi and Alabama after a tornado tore through the southern US states. Search and rescue efforts are continuing, and the Mississippi state government has declared a state of emergency. In Rolling Fork, crushed cars, bricks and glass litter the streets - the town has been almost entirely wiped out. Mississippi state governor Tate Reeves visited Silver City and Winona on Saturday to meet affected residents who had been hit by the tornado's fury. One resident told the BBC he was lucky to survive after seeking shelter in his bath tub. ... Then, suddenly,...