The flag you are referring to is the flag of Turkey. It consists of a red background with a white star and crescent moon in the center.
the color of the star regulus is blue-white
The flag of Japan is often compared to the Star Trek communicator because of its design resemblance. The flag of Japan features a simple red circle in the center of a white background, similar to the design of the communicator used in the Star Trek series.
blue and white
The flag you are describing belongs to Turkey, a predominantly Muslim country located at the crossroads of Europe and Asia. The red background symbolizes the blood shed for the country's independence, while the white crescent moon and star are symbols of Islam.
Australia
The flag of Somalia is a bright blue background with a single white star in the center. The flag was created in 1954 and was designed by Somali scholar Mohammed Awale Liban.
Flag has a yellow background on the left and white on the right with a blue star and a red inuksuk in the center.
Somalia
I don't know what it means, but it's not Judaism's Star of David as seen on the Israeli flag and elsewhere, which has SIX points. The five-pointed star represents Judaism's "Star of David." The state colors of Israel are blue and white and the Israeli flag has a blue Star of David on a white background.
The flag of South Korea has a white background with a blue and red wave-like circle in the center with four sets of three black trigrams surrounding the central circle. The flag of North Korea is a red star in a white circle on a red background with white and blue stripes along the top and bottom.
australia
The flag you are referring to is the flag of Turkey. It consists of a red background with a white star and crescent moon in the center.
Stand with Wisconsin AFL-CIO.
white star at the centre with black background
The big dipper with the north star on a dark blue background.
Pakistan's flag is green with a crescent moon and a star that are both white, so it is one possible answer. However there are many other flags that are green and white, for both nations and other places and things.