primirje

1. armistice; truce; ceasefire
   Dve strane su potpisale primirje. — The two sides signed an armistice.
   Primirje je prekršeno već posle dva dana. — The truce was broken after just two days.
2. (of a quarrel, rivalry) truce
   Brat i sestra su bar za praznike sklopili primirje. — The brother and sister called a truce, at least for the holidays.

Usually with the verbs "potpisati", "sklopiti", "prekršiti".