The United States and Iran are both playing for time. Neither side wants to change its position on the nuclear question, although each hopes the other will give in. Moreover, neither side is really confident in its military options. The Americans are not certain that they can both destroy the nuclear facilities and Iranian counters — and if the counters are effective, their consequences could be devastating. The Iranians are not certain that their counters will work effectively, and once failure is established, the Iranians will be wide open for devastating attack. Each side assumes the other understands the risks and will accept the other’s terms for a settlement.