 Okay, how's this for a nickname? The Rebel Nuns. Ten sisters from the Catholic Order of Poor Clares have earned that moniker by holding up in a convent in the north of Spain and refusing a Vatican order to leave. Technically, the standoff is a dispute over a property deal, but tensions between the nuns and the Vatican have been simmering for a while. The World's Gerry Haddon reports from Barcelona.