an international border lies between countries
Caspian Sea lies between Turkey and Kazakhstan, however Turkey doesn't directly border the Caspian Sea. The countries that border the Caspian Sea are: Azerbaidjan, Iran, Kazakhstan, Russia, Turkmenistan.
There is no country between Iraq and Persia/Iran. The two countries border one another.
Erebus lies on the Antarctic continent, where there are no countries.
A border
Chile
Massachusetts does not border any country. It lies on the east coast of the United States.
A. Undefended Border
indo bhutan border
Germany. Sweden lies next to Denmark as well, but it does not border Denmark
Istanbul
The Columbia River lies between the States of Washington and Oregon, and forms the border between the two.
Mt. Everest lies in the border of Nepal and Tibet but its peak lies in Nepal so basically its Nepal.