MOSCOW—Moscow is ready for dialogue with foreign technology companies over possible bans for those that do not have official representation in Russia by the end of the year, Interfax reported on Monday, citing the state communications regulator. The report said companies would be blocked only as a last resort, dialling back a little from last month’s demands by regulator Roskomnadzor that 13 foreign and mostly U.S. technology companies set up in Russia by Jan. 1 or face possible restrictions or outright bans. Russia has been slowing the speed of Twitter since March as punitive action for not deleting content that Moscow deems illegal. Twitter denies allowing its platform to be used to promote illegal behaviour. Alphabet’s Google and Facebook, meanwhile, face Russian court cases this month for repeated violations of the same legislation. Neither company responded to requests for comment when the court dates were announced. The law on setting …