fratricidal, factional, protracted, acrimonious, bloody, rancorous, fissiparous, sectarian, bitter, unedifying, ideological, fractious, trench warfare, disputatious, sanguinary, great schism, interminable, regicide, riven, unseemly, upmanship, messy, political, unending, partisan, hobbesian, recriminatory, unholy, bunfight, internal, politic, tat, manichaean, militant tendency, embittered, slanging match, intercommunal, abstract noun, irreconcilable, prolonged, uglier, modus vivendi, machiavellian, irresolvable, balkan wars, westernism, suppurating, uncivil, ruinous, hurly burly, gladiatorial, postbellum, recriminating, civil, ignoble, irredentist, kerfuffles, titanic, locus classicus, sunni, divisive, causeless, divisionary, degenerate, unsavoury, sturm und drang, communal, bureaucratic, rivalrous, mindless, anomic, inglorious, polarized, disunited, clannish, hitlerite, convoluted, demagogical, epical, festering, nastier, overdetermined, gangland, yorkist, charnel house, cacophonic, liberalist, particularistic, geopolitical, bon ton, interethnic, cabalistic, insurrectional, intractable, murderous, religio, factious, secessionist, anarchical, pestilential, devolved, intraparty, interservice, intertribal, interparty, intestine, fierce, fiercest, simmering, wordy

mutually ruinous