As Ben Macintyre’s biography of Kim Philby demonstrates, it was the very strength of the British ruling class that left it prone to betrayal from within once old certainties and loyalties began to falter.
Lord Cornwallis has gotten a bum rap in America. He was a gifted troubleshooter who implemented a more streamlined, sustainable version of British power, so that London could emerge triumphant and dominant on the global stage after 1815.
The sanctions relief provided by the Obama administration has helped the Iranian economy to the point where Iran doesn't see a need to make concessions on a nuclear deal. Time to increase pressure on Tehran.