There are some countries which are yet to be visited by US teams: Suriname, French Guiana, Latvia, Slovakia, Slovenia, San Marino, Bulgaria, Montenegro, Serbia, Belarus, Gabon, Ivory Coast, Angola, Comoros, Sierra Leone, Swaziland, Lesotho, Rwanda, Israel, Jordan, Saudi Arabia, Yemen, Kyrgyzstan, Uzbekistan, Myanmar, Brunei, East Timor, Tibet, Fiji, Vanuatu, Marshall Islands, Solomon Islands, Papua New Guinea, American Samoa, etc.
How will you rate which one is dangerous and which one is safe?