The country that matches these properties is Montenegro 🇲🇪
- Without the clue "Its name has 10 letters", other countries are: Hungary, Switzerland, Laos, and 11 more
- Without the clue "Has a population less than 10M", other countries are: Kazakhstan, Uzbekistan, South Sudan, and 3 more
- Without the clue "Borders at least 5 countries", other countries are: El Salvador, Seychelles, Micronesia, and 5 more