Who attacked unsuccessfully Persia in the 1828?

In 1828, the Russian Empire attacked Persia (modern-day Iran) during the Russo-Persian War. The conflict was primarily driven by territorial disputes and Russia's expansionist ambitions in the Caucasus region. Although the Russian forces achieved some initial successes, the campaign was hampered by logistical issues and strong Persian resistance. Ultimately, the war concluded with the Treaty of Turkmenchay in 1828, which favored Russia despite the initial struggles.