Largest flotilla to date leaves Spain for Gaza to try and break Israeli blockade

Some 20 ships carrying people from more than 40 countries left Barcelona, Spain, on Monday for a two-week journey toward Gaza. Along the way, more boats from Tunisia and Italy will join them. Earlier attempts to pass Israeli warships have failed but this is the biggest flotilla yet, and activists hope their sheer numbers will make a difference. The World's Gerry Hadden reports from Barcelona.