The lawsuit was brought last May against X, as Twitter is now known, by Areej al-Sadhan, the sister of a Saudi aid worker who was forcibly disappeared and then later sentenced to 20 years in jail. Lawyers for Al-Sadhan updated their claim last week to include new allegations about how Twitter, under the leadership of then-chief executive Jack Dorsey, willfully ignored or had knowledge of the Saudi government’s campaign to ferret out critics but – because of financial considerations and efforts to keep close ties to the Saudi government, a top investor in the company – provided assistance to the kingdom.