That greater good is nothing less than the security, prosperity and unity of the greatest nation in the world.

CNN: Thompson's September 7, 2007, speech in Des Moines, Iowa

It's going to affect our security and our prosperity and the unity that we need to go forward in this country.

CNN: Thompson's October 19, 2007, speech to Value Voters Summit

That led to a public row and recriminations - both at odds with the vision of unity and prosperity, as the city uses its hard-won cultural title to rebrand its image at home and abroad.

BBC: Divided opinions as Derry prepares for City of Culture 2013