An oil slick adds to flood problems for thousands of people in the US states of Kansas, Oklahoma and Texas.

US Democrats express outrage at President Bush’s decision to commute Lewis “Scooter” Libby’s jail term.

US Democrats express outrage at President Bush’s decision to commute Lewis “Scooter” Libby’s jail term.

Colombia remains one of the most dangerous countries to belong to a trade union, Amnesty says.

Former US leader Bill Clinton makes his first big public appearance in support of wife Hillary’s presidential bid.

Brazilian announces a major plan to improve conditions for people living in Rio’s violence-hit slums.

US President George W Bush intervenes to stop convicted White House aide Lewis Libby from going to prison.

A female leader of Colombia’s Farc rebel group is sentenced to more than 16 years in jail in the US for drug trafficking.

Democrat Barack Obama passes Hillary Clinton in the battle to raise funds for the US presidential elections.

The US and Russian leaders agree to work together on Iran, but fail to reach accord on missile defence plans.