TODAY: Siemens to sue Russia over removal of gas turbines to Crimea; Novak calls for end to sabotage of Russian energy projects in the EU; Russia agrees $3.5bn arms deal with Saudi Arabia; Kaspersky Lab has worked with FSB, emails show; Russia complains to WTO over agreement with Ukraine; court denies Navalny request to swap sentence for jail time, campaign coordinator arrested; Kirill says exorcism treats mental illness; porn users required to give passport data; Russia may expel US diplomats over compound seizure; Trump Jr publishes email proof of Russia ties.