Ничего не делать - нет уже давно требований про 6 месяцев, это миф
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National Russian Fed. (RU) /Embarkation Russian Fed. (RU)
Destination Thailand (TH)
Passport required.
- Passports issued to nationals of Russian Fed. must be valid
for the period of intended stay. - for holders of normal passports;(...)
http://www.staralliance.com/en/services/visa-and-health/