I believe Season 4 is one of the best seasons of Homeland. Especially last two episodes were excellent, but this episode is definitely the best ever.I particularly like the increasing taste of espionage lately. It is also really impressive to see that Claire Danes' performance can still get EVEN better! I believe her acting skills are totally off limits. I really can not find anything less then perfect in terms of acting, script, execution, etc. Another nice thing this season is that the show takes very fair and elaborate perspectives on world issues like terrorism, counter terrorism, etc both from a theoretical and a practical point of view.