The mood of war-battered Iran? Defiant.

Welcome to the daily Inside Scoop newsletter. Iran’s government is encouraging massive rallies across the country, but why? The regime seems to want to show everyone unified after more threats from President Donald Trump and ahead of the United Nations General Assembly next week. Plus, Princess Diana’s brother makes some intense allegations about Prince Charles in a new book about the period after she was killed in a car chase. Let’s get into it. Iran is putting on a show of defiance against the U.S. and Israel nearly seven months into the war. Masses of Iranians marched today in downtown Tehran in a government-organized military rally featuring combat uniforms, weapons and national flags — the largest such demonstration since the conflict began on Feb. 28.