The beginning of wisdom in a situation like this, from the diplomatic point of view, is that you want to slap the offending party hard enough so that no one mistakes it for a pat on the shoulder, lest everyone else in the region conclude that they can run rampant over American interests with no penalty in prospect. But you don’t want to slap so hard that you sever all prospect of future engagement. The reason is that influence is a by-product of engagement. Like most things in life, a balanced approach is best. But it isn’t easy to figure out the details of what that approach ought to be, and if you get it wrong, there can be many unpredictable downstream consequences.