It could be argued that no American president has been as enamoured with violence as Donald Trump. He appears to relish all of it: the spectacle, the promise of it taking place, and, lately, its bloody reality, as - at the time of recording - American bombs continue to drop on Iran.

So, is this the key to to understanding the US president's motivation or all the other wars he’s planning?

Today, international and political editor Peter Hartcher on which country Trump has set his sights on next, and whether Australia is now at war with Iran.