It would be nice to spend less time using military force where it is not necessary. Like the Middle East.
Unfortunately, Russia has shown us that having a military force in Europe is necessary. NK has shown that having a military force in SK is necessary, although thankfully military exercises seem to be enough for now.
China is the only country that seems to be able to function in a peaceful way. Ideally, there would be more cooperation between China and the US, and ideally, the other countries would just continue to focus on peaceful cooperation. But instead they start wars.