The entire star-studded cast of Christopher Nolan’s ‘Oppenheimer’ walked out of the film’s London premiere on Thursday, just before it was announced that SAG-AFTRA members had officially authorized a strike. “We have to recognize that you’ve seen them here earlier on the red carpet,” Nolan said at the premiere, confirming their walkout. “Unfortunately they left to write their picket signs for what we believe is an impending SAG strike.” The legendary director expressed his support for his cast and their fellow actors in their fight “for fair wages for the working members of their union”. On Thursday, SAG-AFTRA announced the strike, which is expected to begin at midnight PT Thursday. If it goes into effect, it will be the first time in 60 years that actors and screenwriters have gone on strike together – the Writers Guild of America has been on strike since May.