URDA, Oct. 29 -- At least 68 people died when two Spanish high-speed trains collided on Wednesday, with rescuers scouring the wreckage for more bodies after Spain's second fatal rail crash this year and Europe's deadliest since 2013. Prime Minister Pedro Sanchez said in a televised address that "all of Spain" was in mourning. Sanchez said the "terrible tragedy" would be investigated and vowed to address any failures that came to light. Spain's transport minister said the crash happened after a Renfe train was authorised to continue its journey despite an active red signal due to a stationary train ahead. At the scene, ambulances, funeral home vans and helicopters had parked next to one of the trains on an elevated track section, while metal and wreckage were strewn across an embankment down which at least three carriages had plunged.P11...