UNITED NATIONS (AP) — The U.N. Security Council is discussing a possible resolution that would reaffirm Ukraine’s sovereignty and territorial integrity and address Sunday’s referendum on whether its Crimean Peninsula should become part of Russia, a council diplomat said Wednesday.

The diplomat said the resolution would aim to show the strong opposition in the U.N.’s most powerful body to a Russian takeover of the pro-Russia Crimea — even though permanent council member Russia is virtually certain to veto any resolution.