Google, Facebook and Twitter cannot be sued by victims of attacks who accuse them of having helped the Islamic State group by relaying its propaganda. The decision had the potential to change the face of the internet, reports our Washington correspondent, Guillaume Naudin.

The judges' restraint has satisfied the tech industry and free speech advocates. The high court "declines" the invitation to look into "section 230" This law, dating from 1996, grants judicial immunity to digital companies for content posted on their platforms.