Kazakhstan — The polar opposite of Vietnam on dual citizenship, and a country that voluntarily renounced the world's fourth-largest nuclear arsenal
Kazakhstan strictly prohibits dual citizenship — acquiring another country's citizenship means losing Kazakhstan citizenship, and concealing it…
Kyrgyzstan — The only Central Asian country allowing dual citizenship, and why it matters for Vietnamese citizens
The four other Central Asian countries follow single citizenship principles. Kyrgyzstan does not — and for Vietnamese wanting additional citizenship, that's…
Tajikistan — Russia's only surviving dual citizenship treaty, and a Persian-speaking country in Central Asia
Turkmenistan terminated its dual citizenship treaty with Russia in 2003. Tajikistan signed a similar treaty in 1995, and it still…