For three years, Sergei V. Kiriyenko has handled the political aspects of the war in Ukraine, rising among a cadre of skilled managers who oversee the sprawling Russian state.

Showing an uncanny ability to adapt to circumstances, Sergei V. Kiriyenko has turned himself into a key engineer of President Vladimir V. Putin’s autocratic machine.

For three years, Sergei V. Kiriyenko has handled the political aspects of the war in Ukraine, rising among a cadre of skilled managers who oversee the sprawling Russian state.