Twenty-first century war adds new risks: more and more often there are no front lines, no central command, no rules of engagement - only a chaotic collision of politics, power, faith and bloodlust. Victims are as likely to be civilians as soldiers.
There are very interesting books about these events, for instance one by a very well-known American historian named William R. Polk called Violent Politics. It's a record of what are basically guerrilla wars from the American Revolution right up through the wars in Afghanistan and Iraq.
... dizzy with the elevation to which the assassination [of Lincoln] has raised him.
Referring to President Andrew Johnson:
Kim Jong-un's style is more suggestive of Saddam Hussein or his murderous son, Uday Hussein.
The tone of political assessment has changed. And honestly, the battle for the hearts and minds of the American people has taken on a bit more of a violent and narrow approach.
I am deeply disturbed by the senseless violence instigated by some leaders in pursuit of their personal political agenda.
I think the president's comfortable with a certain level of violence.
Using terrorism or jihadists or extremists for any political agenda is immoral.