Natalie Nougayrède: In the midst of the Sony hacking scandal, Kim Jong-un received an invite to Russia. It’s a sign that we’re in a new era of hybrid warfare and deniable attacks
Peter Preston: Stolen gossip about Angelina Joli and George Clooney got the hackers the publicity they desired. It also exposed double standards over hacking and the difficulties of global regulation
Peter Bradshaw: This is not the first time a Hollywood film has triggered an international incident, but the reaction has struck closer to home than ever before