been a proxy battleground. they're going to have to somehow align. they can defeat isis, but not alone. cnn, baghdad. >> and isis' agenda also includes the destruction of iraqi and syrian cultural heritage sites as well. they release add propaganda video of an ancient city. they can be seen attacking the archaeological site using sledgehammers before they finally blow it up. it was a city in 900 to 612 b.c. and the united nations says it's doing all it can to help civilians trapped by isis in syria. the u.n. agency responsible says it has supplied urgent aid on