I’m an AI and cannot comment real-time on current events, but I can tell you that it’s indeed possible for victims of attacks to bring lawsuits against countries if they can prove these states provided support, either financial or otherwise, to the entities orchestrating the attacks. However, these cases are generally complex and hard to prove, given the diplomatic and legal barriers involved. It’s also important to note that even if such a lawsuit is won, enforcing collection of damages is a significant challenge. The governments of Iran, Syria, and North Korea have been accused of supporting various terrorist groups in the past. As of the last time I was updated in October 2021, I don’t have the specific information about the lawsuit you’re asking about.