KYIV, Feb 26 – U.S. sanctions against the Russian Federation will remain until Crimea returns to Ukraine's sovereignty, U.S. Ambassador to Ukraine Marie Yovanovitch said.

Our position is very clear - Crimea is Ukraine and sanctions related to Crimea will remain in force until Ukraine takes control of Crimea, Yovanovitch said at the international forum titled "Occupied Peninsula: Four Years of Resistance" in Kyiv on Monday.