A retired German general and former NATO strategist has said he doesn’t see a prospect for a negotiated peace in Russia’s war against its neighbour Ukraine, and lamented what he called “unfortunate delays” in heavy weapons deliveries to Kiev. “There will be no diplomatic solution with (Russian President Vladimir) Putin,” said retired Brigadier General Klaus Wittmann in an interview with the German media outlet Mediengruppe Bayern, published on Thursday. “He may not be irrational, as some claim, but he is obsessed,” Wittman said. Putin wants revenge and to be recognized as a great leader, he sa…