Assuming you are in Hospitallers, but as a neutral party...
Hospitallers attacked Hero Party, a clan much smaller than them, over claims of a Castle. Those claims, were shaky at best, and basically looked like a large clan picking on a smaller clan. Needless to say Hero Party fought back. The former Shogunate decided to attack since they basically took up a mission to stop large clans attacking small clans in the desert. TKoV attacked because kind of the same reason from what I have gathered. FCC got involved officially when one of their caravans got attacked. the caravan depending on who you ask, was either a trap army or an innocent caravan. Either way, Hospitallers attacked it. Norse Horde got involved over a diplomatic row according to to the NH guys.
That's really about it and at best maybe a third of NA, Chaos, Pale Horseman, LLJK, Astralis, Chevaliers, KUTT, Teutonics, etc have not declared nor are at war with Hospitallers.
e: That's about as unbiased as I can make it. Perceptions, propaganda, etc. are all going to be based on what side you are on and what your leaders have told members.