軍事的侵略[gunjitekishinryaku] military aggression
主権侵犯[shukenshinpan] infringement of sovereignty
侵す[okasu] to invade
侵害[shingai] infringement
侵害者[shingaisha] invader

侵撃[shingeki] invading and attacking
侵蝕[shinshoku] encroachment
侵入[shinnyuu] penetration
侵入軍[shinnyuugun] invading army
侵入者[shinnyuusha] intruder