Who is the northwestern  neighbor of the country that boarders Iran on the northeast?
Turkmenistan Turkmenistan ( or ; Turkmen: Türkmenistan/Түркменистан/توركمنستان , ), formerly known as Turkmenia, is a country in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north and east, Afghanistan to the southeast, Iran to the south and southwest, and the Caspian Sea to the west.
Tajiks Tajik (Dari: تاجيک‎ ‎ : "Tājīk", Tajik: Тоҷик ) is a general designation for a wide range of Persian-speaking people of Iranian origin, with traditional homelands in present-day Tajikistan, Afghanistan and Uzbekistan.