The Ministry of Foreign Affairs has called on citizens traveling abroad to adhere to the laws and regulations applicable in the countries they wish to visit. The Ministry has issued a guide for citizens traveling abroad including instructions about passports, airline tickets, personal belongings, the validity of a passport for a period of not less than "six months'', registering passports and addresses at Saudi Embassies, dealing with licensed offices, carrying credit cards and travelers' checks instead of cash money, entry visas, and getting vaccines if required by the State of destination.