I think Morocco is out of the question, protests and a bombing recently. A new country has been visited each time out. The only likely ones I can think of are Paraguay or Denmark that will be visited this time around.
Remember we still also have: Latvia, Belgium, Luxembourg, Andorra, Monaco, Malta, Vatican City, San Marino, Slovenia, Serbia, Bosnia/Herzegovina, Albania, Macedonia, Montenegro, Bulgaria, Slovakia, Bahamas, the Lesser Antilles island nations, Dominican Republic, Greenland, Trinidad, Nicaragua, Belize, Honduras, El Salvador, Colombia, Cape Verde, Sao Tome, Sierra Leone, Togo, Benin, Cameroon, Gabon, Republic of the Congo, Zimbabwe, Malawi, Rwanda, Lesotho, Swaziland, Angola, Reunion, Kyrgyzstan, Laos, Bhutan, Maldives, Brunei, Palau, Indonesia, Papua New Guinea, Vanuatu, Solomon Islands, Marshall Islands, Micronesia, New Caledonia, Tahiti, Samoa, Fiji, and American Samoa. There are plenty of countries left not have been visited.