Numerous Russian ports contend with challenges posed by ice and cold weather or rely on narrow straits controlled by other nations for access to the open sea. For example, Vladivostok, Russia's largest port, connects to the Pacific Ocean via the Sea of Japan, an area with ties to the United States. Moreover, this crucial port faces a four-month closure each year, and the absence of icebreakers would severely impede Russia's operations and trade. On the western front, Russian warships departing from St. Petersburg can navigate the Baltic Sea to reach the Atlantic Ocean. However, they must traverse the narrow Strait of Oresund, situated between Sweden and Denmark, adding to logistical complexities.