Лена вот нашла информацию длы тебя
Да, им нужны будут транзитные визы.
***********.russianvisa.org/faq.html
If I am flying to another country through Moscow do I need a transit visa?
Yes, you do. You should apply for a transit visa to the Russian Consulate showing them your air tickets to and from Moscow. They will issue your transit visa on the grounds of your tickets. Please note that a transit visa can be valid for up to 72 hours.
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