The opening ceremony of the 23rd Iberoamerican Summit is held in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/Mauricio Valenzuela)

Mexican President Enrique Pena Nieto (Top) attends the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/David de la Paz)

Dancers perform during the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/David de la Paz)

Spanish Prime Minister Mariano Rajoy delivers a speech during the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/Mauricio Valenzuela)

Mexican President Enrique Pena Nieto (L) talks with Panama's President Ricardo Martinelli (R) during the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013.(Xinhua/David de la Paz)

The General Secretary of the Iberoamerican Secretariat, Enrique V. Iglesias, delivers a speech during the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/Mauricio Valenzuela)

General Secretary of the Iberoamerican Secretariat, Enrique V. Iglesias, delivers a speech during the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/Mauricio Valenzuela)

Dancers perform during the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/Mauricio Valenzuela) 

  Dancers perform during the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/Mauricio Valenzuela)

Dancers perform during the opening ceremony of the 23rd Iberoamerican Summit, in Panama City, capital of Panama, on Oct. 18, 2013. (Xinhua/Mauricio Valenzuela)