A number of heads of delegations participating in the Fourth Summit of Arab and South American countries arrived here today. The Summit is set to start its works tomorrow on Tuesday. Vice President of the Republic of Argentine, Amado Boudou; Minister of External Relations of the Republic of Brazil, Mauro Luiz Iecker Vieira; Deputy Foreign Minister of the Republic of Bolivia Juan Carlos Alurralde and the Foreign Minister of the Republic of Suriname, Niermala Badrising have already arrived in Riyadh. At King Khalid International Airport, they were received by the Minister of State and Cabinet's Member for Shura Council's Affairs, Mohammed bin Faisal Abu Saq and a number of officials.