Chilean Minister of Energy and Special Presidential Envoy Maximo Pacheco arrived in Riyadh this evening to lead his country's delegation participating in 4th Arab-South American Countries Summit that begins tomorrow in Riyadh. At King Khalid International Airport, he was received by the Minister of State and Member of the Cabinet for Majlis Al-Shoura Affairs Mohammed bin Faisal Abu-Saq and a representative of the Royal Protocol.