The Buggers communicate telepathically using no identifiable external means of communication. Was it inevitable that war would have to occur when two sentient species met but were unable to communicate?

Lack of communication and understanding often leads to conflict. The inability for the species to effectively communicate and understand each other would have heightened the conflict. Was the war inevitable? Fear of the unknown can ultimately lead to horrific consequences. Thus, lack of communication probably played a large part in what happened.