The gospels says both that Jesus advised arming and that "he who lives by the sword dies by the sword." It may be Jesus was more militant than the evangelists let on. After all, the Messiah was expected to vanquish the Romans.

But...we don't know. And we certainly don't know enough to assert that Jesus would approve of American militarism.

I'm no pacifist, but the U.S. could use more peace advocates (thanks, John Fitzgerald) like Dan Berrigan. The country certainly has an excess of hawks.