sentences:  It was not held between 2001 and 2004 due to a combination of factors, most importantly the collapse of FIFA's marketing partner International Sport and Leisure.Following a change in format which saw the FIFA Club World Championship absorb the Intercontinental Cup, it was relaunched in 2005 and took its current name the season afterwards.The current format of the tournament involves seven teams competing for the title at venues within the host nation over a period of about two weeks; the winners of that year's edition of the AFC Champions League (Asia), CAF Champions League (Africa), CONCACAF Champions League (North, Central America and the Caribbean), Copa Libertadores (South America), OFC Champions League (Oceania), and UEFA Champions League (Europe), along with the host nation's national champion, participate in a straight knock-out tournament.