INTERSLAVIC or MEDZUSLOVJANSKI is an auxiliary panslavic language intended for regional communication among speakers and writers of the related SLAVIC languages (Belarusian, Bulgarian, Croatian, Czech, Macedonian, Polish, Russian, Serbian, Slovak, Slovenian, Ukrainian), which all derive from an original "PROTO-SLAVIC" tongue, but which, over thousands of years, have morphed into very divergent "dialects," each becoming a separate language unto itself.
INTERSLAVIC is a collaborative effort of a group of SLAVIC LANGUAGE speakers to establish the first panslavic language that is fully based on the commonalities of the living SLAVIC languages, augmented with key elements of traditional Old Church Slavonic word-forms.
INTERSLAVIC is currently being tested by a consortium of law firms in four SLAVIC countries as a lingua franca for legal and financial agreements. Also, a Blog of interesting articles written in INTERSLAVIC may be found at www.izviestija.info