The Dai Viet Nationalist Party is an old political party from Vietnam which currently operates in exile:
Dai Viet Nationalist Party (Vietnamese: Đại Quốc Dân Đảng Việt) was founded on 10 December 1939 in Hanoi with the goal of restoring the independence of Vietnam, for which they used its pre-1804 name Dai Viet. In 1945, the party joined the Viet Quoc and several other parties to form what was called the Nationalist Party Front of Vietnam (Mat Tran Quoc Dan Dang Viet Nam) in the Communist-controlled North and the National United Front (Mat Tran Quoc Gia Lien Hiep) in the non-Communist South; the alliance (single party in the North) was not successful and did not last long, leaving the current party flag (see below) as its only legacy. The party was in the opposition during the Ngo Dinh Diem dictatorship, its members taking part in the coups against the regime, which responded by persecutions. The party members also took part in the successful 1963 coup, including the assassination of Ngo Dinh Diem and his brother and assistant Ngo Dinh Nhu. During the following years, the party participated in several governments, but also suffered from two splits, which resulted in formation of the New Dai Viet Party in 1964 and the Dai Viet Revolutionary Party in 1965. Since 1975, the party operates in exile.
The party flag is red, with a large blue disc in center, which is charged with a large white star. Its design is identical with that of the Viet Quoc party flag and it was adopted in 1945 by the then alliance as a whole, obviously having been kept by both parties even after they parted their ways. The choice of design, especially colors, might have been partly inspired by the flag of Kuomintang, which was aiding Vietnamese non-Communist movements at that time. The flag can be seen at the party website in the photos as well as in the page headers.
NB: Although the Wikipedia translates Dai Viet as "Greater Vietnam," I did not follow that, because the correct translation would be "Great Viet" (just as Viet Nam or Nam Viet would be "Southern Viet") and, considering that it was the complete name of the country, it seems the best not to translate it at all. Tomislav Todorovic, 7 September 2011