Facing backlach of Treaty of Turkmenchay, Alexander Griboyedov, Russian Empire's Ambassador to Tehran, and all the other embassy staff, were massacred by an angry mob.

The Treaty of Turkmenchay was an agreement between Qajar Iran and the Russian Empire, which concluded the Russo-Persian War (1826–1828). It was second of the series of treaties signed between Qajar Iran and Imperial Russia that forced Iran to cede or recognize Russian influence over the territories…