As a geopolitical expert with a keen interest in international relations and border security, I've often studied the various walls and fences that have been constructed around the world. These structures serve a variety of purposes, from security to the regulation of migration and trade. It's important to note that the presence of a wall or fence at a border does not necessarily reflect the entirety of the relationship between two countries but is often a response to specific issues or challenges.

India and Pakistan have a border wall, which is primarily a security measure to prevent cross-border infiltration and smuggling. This wall is part of a larger security infrastructure along the Line of Control in the disputed region of Kashmir.

Georgia and South Ossetia have a barrier that was erected following the 2008 conflict. The barrier serves to delineate the internationally recognized border of Georgia from the Russian-backed breakaway region of South Ossetia.

In the Gaza Strip, there are walls and fences on its borders with Israel and Egypt. These are part of a larger security system known as the Gaza Strip barrier, which includes a wall along the border with Israel and a border fence with Egypt. The primary purpose of these barriers is to control the movement of people and goods into and out of the Gaza Strip.

The U.S. and Mexico share a border that has seen the construction of a wall in certain areas, particularly in urban areas and known crossing points. The wall is intended to deter illegal immigration and smuggling.

The North Korea and South Korea border is marked by the Korean Demilitarized Zone (DMZ), which includes a heavily fortified fence and is one of the most heavily militarized borders in the world.

India and Bangladesh share a porous border with a fence that has been constructed in certain areas to control illegal immigration and smuggling.

Other countries have also constructed walls or fences along their borders for various reasons. For instance, Saudi Arabia and Iraq have a barrier to prevent the movement of people and goods across the desert. Similarly, Hungary has built a fence along its borders with Serbia and Croatia to control the flow of migrants during the European migrant crisis.

It's crucial to understand that these walls and fences are not static; they evolve with political climates, security concerns, and international relations. They are also subject to ongoing debates about their effectiveness and the ethical implications of restricting movement across borders.

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Here is a selection of some of the walls and border fences worldwide.India and Pakistan. ... Georgia and South Ossetia. ... Gaza Strip and Israel. ... Egypt and Gaza Strip. ... Israel and West Bank. ... U.S. and Mexico. ... North Korea and South Korea. ... India and Bangladesh.More items...read more >>