Separatist tensions endure in Spain after deadly attacks

Spain appealed for unity after the deadly attacks in Catalonia but tensions between Madrid and Barcelona over the region's separatist drive have endured and have even flared up in the police probe.The regional Catalan government is determined to push ahead with an independence referendum in the wealthy northeastern region on October 1, which Madrid has vowed to stop.The strain in ties has remained palpable in the aftermath of the twin vehicle attacks last week in Barcelona and Cambrils, a seasid