Militant Islam is at war with the world.
...American is at war - hot or cold - with half the world too.... It seems that ISIS and the USA might find common ground, especially as they use the same weapon systems and arms suppliers....
No, America is not at-war with half the world, hot or cold.
America is merely playing world policeman, for better or worse.
Stepping into the vacuum left behind when you Brits bled yourselves dry and bankrupted yourselves fighting two world wars, and had to let go of your centuries-old empire.
It's a dirty job, but somebody had to pick up the slack, when you bailed-out on your responsibilities in the 1940s.
Nowadays, The Cop is busy keeping a close eye on the latest scum to arise from the sinkholes of the Middle East - namely, Radical, Militant Islam.
As to the US finding common ground with ISIS...
Past machinations don't really matter a damn, once ISIS intentions became clear, and once they began demonstrating their true Neanderthal nature...
There is zero chance that we would take-up common cause with ISIS for any prolonged period of time...
Who wants to take sides with backwards, woman-hating, knuckle-dragging savages - sick, deranged sheep-buggerers who think that God wants them to conquer the world?
Only fellow backwards, woman-hating, knuckle-dragging savages and sick, deranged sheep-buggerers with a perverted and sick vision of what The Deity wants of them.
There are far fewer such folk hereabouts than in the ignorant cesspools and shitholes of the Middle East and beyond from which these scum recruit their warrior-pansies.
We (America) will take a pass on making nice with those sick bastards.
We'll leave that to Muslim ass-kissers and fifth-columnists and Muslim propaganda shills.