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Kazakhstan, officially the Republic of Kazakhstan, is a landlocked country primarily in Central Asia, with a small portion in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbekistan to the south, and Turkmenistan to the southwest, with a coastline along the Caspian Sea. Its capital is Astana, while the largest city and leading cultural and commercial hub is Almaty (which had been the capital city until 1997).

Kenya, officially the Republic of Kenya, is a country located in East Africa. With an estimated population of more than 53.3 million as of mid-2025, Kenya is the 27th-most populous country in the world and the seventh-most populous in Africa. Kenya's capital and largest city is Nairobi. The second-largest and oldest city is Mombasa, a major port city located on Mombasa Island. Other major cities within the country include Kisumu, Nakuru and Eldoret. Going clockwise, Kenya is bordered by South Sudan to the northwest (though much of that border includes the disputed Ilemi Triangle), Ethiopia to the north, Somalia to the east, the Indian Ocean to the southeast, Tanzania to the southwest, and Lake Victoria and Uganda to the west.

Kingman Reef (/ˈkɪŋmən/) is a largely submerged, uninhabited, triangle-shaped reef, geologically an atoll, 9.0 nmi (20 km) east-west and 4.5 nmi (8 km) north-south, in the North Pacific Ocean, roughly halfway between the Hawaiian Islands and American Samoa. It has an area of 3 hectares (0.03 km2; 7.4 acres) and is an unincorporated territory of the United States in Oceania. The reef is administered by the United States Fish and Wildlife Service as the Kingman Reef National Wildlife Refuge. It was claimed by the United States in 1859 and later used briefly as a stopover for commercial Pacific flying boat routes in the 1930s going to New Zealand; however, the route was changed with a different stopover. It was administered by the Navy from 1934 to 2000 and thereafter by the Fish and Wildlife Service. It has since become a marine protected area. In the 19th century, it was noted as a maritime hazard, earning the name Hazard Rocks, and is known to have been hit once in 1876. In the 21st century, it has been noted for its marine biodiversity and remote nature. Hundreds of fish and coral species are on and around the reef.

Kiribati, officially the Republic of Kiribati, is an island country in the Micronesia sub-region of Oceania in the central Pacific Ocean. The state comprises 32 atolls and other islands and one remote raised coral island, Banaba. Its total land area is 811 km2 (313 sq mi) dispersed over 3,441,810 km2 (1,328,890 sq mi) of ocean. The spread of the country's islands, from Banaba in the west to Kiritimati in the east straddles the equator and the 180th meridian. The International Date Line goes around Kiribati and swings far to the east, almost reaching 150°W. This brings Kiribati's easternmost islands, the southern Line Islands south of Hawaii, into the same day as the Gilbert Islands and places them in the most advanced time zone on Earth: UTC+14.

Kosovo, officially the Republic of Kosovo, is a landlocked country in Southeast Europe with partial diplomatic recognition. It is bordered by Albania to the southwest, Montenegro to the west, Serbia to the north and east, and North Macedonia to the southeast. It covers an area of 10,887 km2 (4,203 sq mi) and has a population of nearly 1.6 million, of whom the vast majority (approximately 92 per cent) are ethnic Albanians. Kosovo has a varied terrain, with high plains along with rolling hills and mountains, some of which have an altitude over 2,500 m (8,200 ft). Its climate is mainly continental with some Mediterranean and Alpine influences. Kosovo's capital and most populous city is Pristina; other major cities and urban areas include Prizren, Ferizaj, Gjilan, and Peja.

Kuwait, officially the State of Kuwait, is a country in West Asia. It is situated at the head of the Persian Gulf in the northeastern edge of the Arabian Peninsula, bordering Iraq to the north and Saudi Arabia to the south. With a coastline of approximately 500 km (311 mi), Kuwait also shares a maritime border with Iran, across the Persian Gulf. Kuwait is a city-state; most of the country's population reside in the urban agglomeration of Kuwait City, the capital and largest city. As of 2024, Kuwait has a population of 4.82 million, of which 1.53 million are Kuwaiti citizens while the remaining 3.29 million are foreign nationals from over 100 countries. In 2019, Kuwait had the world's third largest number of foreign nationals as a percentage of the population, where its citizens make up less than 30% of the overall population.

Kyrgyzstan, officially the Kyrgyz Republic, is a landlocked country in the eastern regions of Central Asia, lying in the Tian Shan and Pamir mountain ranges. It is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the south, and China to the east and southeast. Kyrgyzstan's capital and largest city is Bishkek which lies on the northern border with Kazakhstan. Ethnic Kyrgyz make up the majority of the country's over 7 million people, followed by significant minorities of Uzbeks and Russians.