Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
situation [sɪtjuˈeɪʃən] n (state) ситуа́ция, положе́ние (job) ме́сто#; (location) ме́сто* положе́ние
"situations vacant" (BRIT) "вака́нтные места́"
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.