u.n. official anthem is having a revival. >> the song does not mention a border crossing or army or fighting. it's a song about people. it's a song about people who care about the police you live in. now, it's extending the claims to include a large maritime area where exxonmobile said it made a discovery. the for many the history goes back. >> venezuela claim that this is null and void. >> in the late 20th century, venezuelan refused to abide by it. >> 49 years passed that claim has not been broken. >> for 20,000 living along the river, a decree laid claim to the area could spell economic disaster and could see them displaced from their homes. people lived there during 150 years that this was a british colony and after independence in 1956. it was hard to imagine being part of venezuela. >> they buy us out. >> reporter: as one of the poorest countries in the region guyana could do with the oil revenue. >>> and a quick reminder you can keep up to date with all the news on the website. there is it is on the screen. aljazeera.com. it's aljazeera.com. >>> on "america tonight" - closing the door