13 hours agoBy João da Silva, Business reporterA union representing workers at South Korean technology giant Samsung Electronics has called on its roughly 30,000 members to go on strike indefinitely, as part of its campaign for better pay and benefits.The announcement came on the last day of a three-day general strike being held by the National Samsung Electronics Union (NSEU).The union said it had made the decision after management showed no intention of holding talks over its demands.The NSEU,...