@Ratter15
In a way, I think we already -have- put wars behind us.
In 1914, news that there was a war on would have reached most people by word of mouth and peer-pressure alone would have been enough to encourage a man to sign up.
By 1939, most of the population would have been following developments in Europe via the press and radio and needed equally little convincing to join up.
Since Vietnam, we've had anti-war protest marches and there is much hand wringing over every single combat fatality.
Clearly, pulbic attitudes have changed and politicians are painfully aware that warring is a surefire vote-loser *unless* they can garner overwhelming public support for a specific 'cause'.
The bad news for the Syrians is that we're twice bitten, thrice shy, as far as Middle East conflict is concerned. Or is it that we're flat broke?