Turkish Straits.

Asia and Europe: Ural Mountains - Ural River - Caspian Sea - Caucasus Mountains - Black Sea - Turkish Strait Africa and Europe: Strait of Gibraltar - Mediterranean Sea.

The Turkish Strait, known as the "throat of the world", is the only strait from the Mediterranean to the Black Sea, so it is also called the Black Sea Strait. It consists of three parts: the Bosporus Strait, the Sea of ??Marmara and the Dardanelles Strait, with a total length of 345 km. The entire strait runs northeast-southwest and is the dividing line between Asia and Europe. Sovereignty on both sides of the Taiwan Strait belongs to Türkiye. ?

Turkish Strait

Strait name Length (km) Width (km) Main channel water depth (m)

Bosphorus 30.6 747~3700 27.5~124.

The Dardanelles 61.0 1200~6400 57~92.

The Sea of ??Marmara, which connects the two straits, is about 250 km long from east to west, 70 km wide from north to south, and covers an area of ??11,800 km2. It is the smallest sea in the world, but it is very deep, with the deepest point reaching 1,355 m. The average depth is 183 m.

The Black Sea in northern Türkiye covers an area of ??43.64 square kilometers, between Gansu Province and Yunnan Province. The Black Sea is such a large area, but it has only one narrow outlet, which is the Bosporus Strait in Turkey (hereinafter referred to as Strait A). Along the Black Sea, clockwise, there are six countries: Turkey, Bulgaria, Romania, Ukraine, Russia and Georgia.

To go to the Mediterranean, Black Sea countries must pass through Strait A in Türkiye. Strait A has a total length of 30.4 kilometers, the widest is about 3.6 kilometers, the narrowest is about 708 meters, the deepest is about 120 meters, and the shallowest is only 27.5 meters. In such a long and narrow area, passing ships must obtain permission from Turkey. It is too difficult to get through. After the First World War, the Ottoman Turkish Empire was defeated and the international trusteeship of both sides of the Taiwan Strait was largely due to its special geographical location. It was not until 1936 that the United Nations returned it to Türkiye.

After World War II, Bulgaria, Romania, and the Soviet Union (in this region, Ukraine, Russia, and Georgia) were all socialist countries. During the Cold War, the West used Turkey to blockade the above countries. It can be seen at that time Doing is capitalism locking in socialism. After the disintegration of the Soviet Union after the Cold War, each of these countries had a bitter feud with Turkey, and Turkey still imposed selective blockades on these countries.

Looking at the locked countries, Bulgaria, Romania, Ukraine, and Georgia, except for the Black Sea coastline, all other territories are on land. Once the sea routes are blocked, there will be no difference from landlocked countries. . Although Russia has a long coastline, most of it is in the Arctic Ocean and is of little use. The Black Sea seaport is the southernmost seaport in Russia and the seaport closest to the Mediterranean Sea. It has an important strategic position.