They can finish but there are reasons they didn't. This isn't the past, and Trump isn't Bush, Obama, Biden or any others. That ego has him wanting to win, even though the costs might be high. All past wars have little to do with a new person in charge, new technology and Americans and other countries being tired of being victims of terrorism. This isn't East Timor but a thousands times larger, involving not just a couple of countries but most everyone. Australia was originally for the conflict there, backing Indonesia in it's tyranny over the Timonese, but changed it's thinking, and with help from others, ended what was going on. The world's citizens were against them so they had to do something. The same thing happening here, with America wanting to have relations with Iran, but them resisting change.That conflict was 24 years. This will end soon .