Черноморские проливы
The Turkish Straits crisis was a Cold War-era territorial conflict between the Soviet Union and Turkey. Turkey had remained officially neutral throughout most of the Second World War. When the war ended, Turkey was pressured by the Soviet government to allow Soviet shipping to flow freely through the Turkish Straits, which connected the Black Sea to the Mediterranean. As the Turkish government refused the Soviet Union's request, tensions arose in the region, leading to a Soviet show of naval force. The incident would later serve as a deciding factor in the issuing of the Truman Doctrine. At its climax, the tensions would cause Turkey to turn to the United States for protection through NATO membership.