To understand the countries that use the white and red combination in their symbols, it is worth learning about each option in more detail.
Bahrain
This Arab country has one of the most original standards in the world. The white-red flag of the Kingdom of Bahrain was approved not so long ago, in 2002, but has already become famous in other countries and is well remembered by people. A square-shaped cloth with an aspect ratio of five to three uses only two colors - red and white. The light one is located at the pole, and the scarlet at the edge, the latter being twice as wide. The border of the two fields is zigzag. It forms five white triangles and four full red ones. The latter are supplemented by two halves at the edges. The white and red flag of Bahrain can be used by both government and citizens. The royal family uses a different banner. On the white background of the standard is the state emblem, and at the pole is a golden crown. The colors of the national flag are used in other symbols. The coat of arms in the form of a red shield with a horizontal white stripe has existed since 1930, when it was created by a British adviser.

Tonga
The red and white flag of this country has been used since 1875. It is protected by the constitution, which prohibits any changes to the cloth. A traditional rectangle with a two-to-one length-to-width ratio is used by officials and civilians on merchant ships and private ships. The armed forces and the Navy have their own symbols. State flag - white with red. Scarlet is the foundation. White is used for the rectangle in the upper left part of the pole, there is a red cross on it. There is an image of a flag on the coat of arms. Together with images of a dove with an olive branch of the world, three stars as symbols of the main archipelagos and the crown of the monarch, a red cross from the flag creates the main state symbol. Below is a white ribbon with the inscription "God and Tonga - my legacy." For the first time, the modern flag was used in 1864, but officially it was accepted only after a decade. Despite the protectorate of Great Britain, the country used the standard both during the period of dependence and after it, which allowed the panel to maintain its historical appearance to the present moment.
Indonesia

An interesting story is connected with the banner of this state. There is more than one country using the white-red flag - the same standard belongs to Monaco. This is a serious reason for confusion, but the ancient history behind each of the state symbols makes it impossible to cancel one of them. Indonesia approved its flag in 1945. Bicolor with two equal stripes is a rectangle, red on top and white at the bottom. Its width refers to the length, as two to three. The red and white flag is used for government installations on land, and the Navy uses a cloth with nine stripes, five of them are red and four are white. The standard begins history in the fourteenth century, when the state of Majapahit was located on the territory. It maintained contact with its neighbors and was famous for its influence. The flag of this state was taken as a basis in 1945, when the Indonesians gained independence and chose a new symbol of the country. The first president, Sukarno, personally produced the banner, which was raised on the day of sovereignty for several years. Now the red and white flag is kept in the museum, and a copy has replaced it on the flagpole. The European state of Monaco expressed an official protest, but the ancient origin of the Indonesian standard was the basis for its rejection, so the countries continue to use identical symbols.
Austria
Among European states, it is not difficult to find one that uses the white-red flag. For example, the Austrians use these two shades for national symbolism. The cloth has the shape of a rectangle with three horizontal stripes. The edges are red, and between them is white. The scarlet symbolizes the blood shed by the patriots, and the bright middle is connected with the freedom won by the brave people and the overthrown monarchical regime. However, the official meaning of the flowers is completely different. According to him, the white stripe symbolizes the Danube River. According to legend, the flag was created by the Duke Leopold the Fifth, who participated in a fierce battle and, removing his belt, found that his entire form was saturated with blood, only clean cloth remained at the waist. He was impressed by the combination of colors and decided to use it for heraldic symbols.
Tunisia
To complete the list of countries using the white-red flag, this republic stands. Tunisia adopted national symbols in July 1999. The sheet is rectangular in shape with a length related to the width in a proportion of three to two. The flag is made in red, and in the center is a white circle with a crescent moon and a five-pointed star. On the banner of the country's president there is also a gold inscription "for the people", made in Arabic, and a golden fringe is used around the edges. The modern banner was adopted not so long ago, but its different versions have existed since the eighteenth century and talk about the relationship of the state with the history of the Ottoman Empire.