Name the country

North Korea is correct. Its flag features a prominent red star inside a white circle set on a red field with blue stripes—symbols tied to socialism (red star), purity and the Korean nation (white), revolutionary spirit (red), and peace and friendship (blue). The country’s formal name is the Democratic People’s Republic of Korea (DPRK), established in 1948, with Pyongyang as its capital. Memory tip: If you see a red star in a white circle plus blue edges, think North Korea. Vietnam’s flag is just a single yellow star on a plain red field; Yemen is a simple red-white-black tricolor with no emblem; Afghanistan (pre-2021 versions) had vertical stripes and a central emblem.