Do countries like South Korea and Russia require national service for residents?

Yes, both South Korea and Russia require mandatory national service, but only for their male citizens - not for international students or most residents on study visas.

- South Korea: Male citizens aged 18-35 must complete military service (18-21 months, depending on the branch).
- Russia: Male citizens aged 18-30 must serve for one year.

International students on study visas are typically exempt from these requirements. If you later acquire citizenship or permanent residency, you may become subject to national service. Rules are subject to change.