In September, 2007, Friedman agreed not to call for any more FUs: "Stephen Colbert brings on Thomas Friedman, author of "The World is Flat"... Colbert offers up the same six months (also known as a Friedman Unit or FU) that Friedman has spent the last four years claiming would be all we need to see "success in Iraq", but Friedman admits we're all out of FUs." However, in July, 2008, he again called for a delay in Barack Obama's plan to withdraw troops from Iraq, in effect adopting John McCain's position. Even after Barack Obama had designated the summer of 2010 as his goal for starting to bring American troops home from Iraq, with the end of 2010 as his deadline, in October 2008 Friedman was reported as calling for another Friedman unit, giving his opinion that, if elected, President Obama should let troops remain until 2011.