Republic of Estonia (restored)
Who & why: the Supreme Council declares a formal transitional break with Soviet law on 30 March 1990 and issues a fuller sovereignty declaration that May; full restoration follows on 20 August 1991, during the failed Moscow coup against Gorbachev, and international recognition (including from the USSR itself) arrives within weeks. Estonia joins NATO and the EU in 2004 and adopts the euro in 2011.
What it represents: the same blue-black-white tricolor flown by the first republic before 1940 is restored exactly, unaltered — a deliberate statement of legal continuity, treating the Soviet decades as an illegal interruption rather than a new beginning. Blue is traditionally read as sky and loyalty, black as the soil and the nation's past suffering, white as the aspiration toward a brighter future and snow.
Both sources date the current flag to 1918, before this era begins in 1991, so the flag was already in use at the start. Wikipedia's infobox gives the adoption as 21 November 1918; Flags of the World dates it 21 November 1918.
- Flag of Estonia — Wikipedia compiled
- Estonia — Flags of the World (CRW Flags) compiled
Not established: Only the year the current flag was adopted was compared; the design and the swatch colours were not checked against a specification.