The United States has the luxury of pushing others toward confrontation. We have only two neighbors, Canada and Mexico, neither of them potentially hostile. We do not normally calibrate our foreign policy to fit their needs. In fact, we rarely take them into account. Separated by vast oceans from potential enemies, Americans know that even if overseas conflicts escalate terribly, they will probably not come to our shores. That makes it easier for us to adopt the “let’s-you-and-him-fight” attitude toward regional crises.