How does psychiatry judge suicide by military and political leaders?
Suicide is not a psychiatric disorder. Suicidal ideation or attempts are considered a symptom of certain psychiatric disorders (e.g. depression), and these disorders are treated by psychiatrists, but in and of itself suicide can be a rational choice and is in some legislations even legally facilitated by physicians (e.g. for the terminally ill).

Within their professional capacity, psychiatrists have nothing to say about people killing themselves to avoid shame or punishment or as a sacrifice for their country.