TURKEY has numerous debates with Greece concerning the particular maritime borders, air rights, and territorial control within the Aegean Sea, is the only country (other than Greece) that borders the Aegean Sea, and is in Southwest Asia.
Mexico
Mexico.
Dony
Texas borders just one country (besides the US), that's Mexico to the southwest.
Spain
Ecuador borders southwest Colombia, and Panama borders northwest Colombia.
India borders the south west region of China.
mexico
Both Guatemala and Belize.
Jordan borders the southwest region of Israel.
Southwest of Iraq is Saudi Arabia, which while it does border the Persian Gulf is NOT small. Kuwait is on Iraq's southeastern border and is a small country that borders the Persian Gulf.