The Russian President says he is confident that those behind the murder of the human rights activist Natalia Estemirova will be found. Dimitry Medvedev made the comments during a visit to Munich for talks with the German Chancellor. He promised a full investigation into what he called a “very sad” case.“This murder is linked to her professional activity, which is useful and necessary in any normal state,” he said. “She did many useful things. She always spoke the truth in an open way, and sometimes forcefully. She criticised some events, and this was the mission of her profession, even if it wasn’t very comfortable for the authorities.” The two leaders also discussed the Russian-backed bid for the German car maker Opel and Russia’s Nord Stream gas pipeline project. Finance and transport contracts have also been signed.