 Swiss International Air Lines (Swiss) accepted an invitation to join Oneworld in September 2003, after signing a memorandum of understanding (MOU) on 23 September 2003 to establish a wide-ranging commercial agreement with British Airways. However, Swiss later decided not to proceed with key elements of its agreement with British Airways and was therefore released from its commitment to join Oneworld. Swiss was later taken over by Lufthansa in 2005 and joined Star Alliance in 2006.
