Four Russian military intelligence agents were discovered attempting to hack into the headquarters of the Organisation for the Prohibition of Chemical Weapons in The Hague The four men, named as IT experts Alexei Morenetz and Yevgeny Serebriakov, and support agents Oleg Sotnikov and Alexei Minin, travelled on diplomatic passports to Amsterdam's Schiphol airport on 10 April, where they were met by a Russian embassy official.