proglasiti

1. to declare; to proclaim
   Vlada je proglasila vanredno stanje. — The government declared a state of emergency.
   Crna Gora je 2006. proglasila nezavisnost. — Montenegro proclaimed independence in 2006.
2. (someone as something) to declare; to name; to pronounce
   Sud ga je proglasio krivim. — The court found him guilty.
   Proglašen je za najboljeg igrača utakmice. — He was named player of the match.
3. (proglasiti se) to declare oneself
   Proglasio se pobednikom pre kraja brojanja glasova. — He declared himself the winner before the vote count was over.

Declaring someone something: proglasiti + acc. + instr. (krivim) or za + acc. (za pobednika).