Is it a common thing – when diplomats negotiate with each other in a familiar manner? Henry Kissinger, for instance. I always thought, he was (is) a reserved person and had (still has) a very refined manner of speaking. But concerning telephone talks with Dobrynin, he was amazingly informal.(“where the hell is it?” “Uh-huh”…) Maybe the reason was, that they were just old friends? Would anybody explain me this phenomenon? Thanks in advance.