Personnel change in diplomatic role. Capture score 2/5 reflects normal executive branch personnel authority over envoy positions. Single article with 'expected to leave' language indicates speculative reporting without confirmed action. No evidence of institutional capture mechanisms - envoys serve at pleasure of president. International scope but moderate population impact limits constitutional significance. B-score 11.9 reflects moderate media interest in Ukraine policy shifts but lacks viral characteristics. Timing coincides with 'new peace plan' narrative but insufficient evidence of coordinated distraction strategy. Classification: Noise due to A<25, speculative nature, routine personnel authority, and absence of constitutional damage mechanisms.