mandatory russian

• село́

  village

  A large peasant settlement is an economic and administrative center for the surrounding villages (in pre-revolutionary Russia a church was also a mandatory part of such a settlement).

• обяза́тельный

  required obligatory compulsory mandatory

• обяза́тельность

  Obligation, binding nature, necessity, mandatory

• манда́тный

  mandate, warrant, mandatory

Examples

• Э́то обязательно?Is it mandatory?
• Прису́тствие обязательно.Attendance is mandatory.
• Они не сказа́ли, что э́то запрещено. Напротив, они говоря́т, э́то обязательно.They don't say that it's prohibited there. In fact, they say that it's mandatory.