NATION : Estee Lauder’s Son to Oppose Koch

<i> From Times staff and wire service reports </i>

Ronald Lauder, a millionaire Republican and former U.S. ambassador to Austria, said today that he will run for mayor of New York City this year.

The son of cosmetics magnate Estee Lauder is expected to face Democrat Edward I. Koch, who has indicated that he will seek a fourth term in heavily Democratic New York. Lauder said in a statement that he will “do everything in my power to bring responsive, responsible government back to the people of New York City.” Lauder, 44, is on the Forbes magazine list of the 400 richest Americans, with a fortune estimated at $333 million.