Deciding to go to war, to support a war, or even which war to engage with should not be an easy decision. It should be complex: informed and debated. That wasn’t the case for the majority of countries which have been overtly supporting Ukraine in 2022, but it might well have been in the Kremlin. That doesn't make either party right. Peter talks to veteran diplomat, soldier, politician, traveller, adventurer and aid worker Rory Stewart about why some wars garner political interest (and others don’t); about why chance, narratives and strong voices in the Cabinet room culminate in moments that make investment in conflict happen; about why strategy, signalling and diplomacy are absent in preventing wars from starting in the first place; and, about how ending wars is such a difficult conversation to have.