Analysis-How Iran is widening its pressure campaign to force US concessions

By Samia Nakhoul BEIRUT, Aug 3 (Reuters) - Iran is betting it can outlast Washington by turning the Middle East's trade routes, shipping lanes and energy infrastructure into pressure points that steadily raise the cost of confrontation, according to Gulf officials and analysts. Rather than seeking a decisive military victory, Tehran is pursuing a strategy of calibrated escalation aimed at widening the conflict without triggering full-scale war.