The U.N. representative of the opposition Syrian National Coalition is demanding that the United Nations take down a new photo exhibit sponsored by the Syrian government, saying Syria is using it to "whitewash the regime's war crimes."

The "My Homeland" exhibit opens Thursday with photographs of a ruined Aleppo, including captions that mention defending against "terror groups." Syrian authorities refer to those trying to topple President Bashar Assad as terrorists.

The photos are already on display at the United Nations.

The U.N. secretary-general's spokesman had no immediate comment on Wednesday's letter by Najib Ghadbian asking the U.N. to "correct this grave mistake." Ghadbian says the photos paint Syria's government as victim, not aggressor.

Photographer Hagop Vanesian told The Associated Press his work is "humanitarian" and said he's not a politician.