Complex sentence: In the aftermath of the war and humiliating Treaty of Turkmenchay, anti-Russian sentiment in Persia was rampant and, soon after Griboyedov's arrival at Tehran, a mob stormed the Russian embassy.
Split into simpler sentences: In the aftermath of the war and the humiliating Treaty of Turkmenchay, there was strong anti-Russian sentiment in Persia. Soon after Griboyedov's arrival in Tehran, a mob stormed the Russian embassy.