Prime Minister Lee Hsien Loong and his wife, Mrs Lee, made the sign of a heart as they marked Valentine's Day at Land's End Trail in San Francisco. Mr Lee wished Singaporeans a belated happy Valentine's Day, due to the time difference, on his Facebook page, where this photo was posted. They were taking a break during a week-long working visit to the US West Coast that included meetings with leaders from tech giants Tesla, Apple, Facebook and Google in Silicon Valley, and ends with Mr Lee joining other Asean leaders in Sunnylands, California, for a summit with United States President Barack Obama.