Territorial dispute between Venezuela and Guyana related to oil

This week, the International Court of Justice is hearing arguments in a territorial dispute between Venezuela and its neighbor Guyana. Venezuela claims two-thirds of neighboring Guyana, on the basis of Spanish colonial history. Phil Gunson is a senior analyst with the International Crisis Group based in Caracas. He tells The World's Host Carolyn Beeler that tensions over this territory have a lot to do with oil.