Wasn't Aerolineas Argentinas supposed to be in one world? The only thing they had to do was have a flight to dfw with an A340 (Or so I have been told). That never happened, and now LAN is part of oneworld instead. Which I think was a great move. All my experiences with LAN have surpassed the level of service I get at AA, AR on the other hand would not even compare to other one world airline like cathay, british airways, ect.