Muslim conquest of Persia new offensive policy, preparing to launch a full-scale invasion of what remained of the Sassanid Empire. The Battle of Nihawand was one of the most decisive battles in Islamic history and proved to be the key to Persia. After the devastating defeat at Nihawand, the last Sassanid emperor, Yazdegerd III, fled to different parts of Persia to raise a new army, with limited degrees of success, with Umar trying to capture him. Umar decided to strike the Persians immediately after their defeat at Nihawand, when he had gained a psychological advantage over them. Umar had to decide which of the
Previously Unaired Christmas insensitive by being wildly insensitive, but Glee's started to do that on an almost weekly basis now." Previously Unaired Christmas "Previously Unaired Christmas" is the eighth episode and fall finale of the fifth season of the American musical television series "Glee", and the ninety-sixth episode overall. It was directed by Wendey Stanzler and written by Ross Maxwell, and it aired on Fox in the United States on December 5, 2013. The episode is the show's fourth Christmas special, but due to season five being set in the same calendar year as season four, it is a non-canonical episode which purports