Who? The French minister in charge of relief work in Haiti, Alain Joyandet, said he had been involved in a scuffle with a United States commander. The incident in the Port-au-Prince airport's control tower occurred over the flight plan for a French evacuation flight. 'This is about helping Haiti, not about occupying Haiti,' Joyandet said. What? The French minister is calling on the United Nations to 'clarify' the role of the US in Haiti. He says the military build-up is like an occupation and it is making it hard to help the Haitians. When? The minister lashed out at the US military forces on Monday. An international effort has been trying to get aid to the people of Haiti since an earthquake struck last Tuesday at 4.53pm. Where? Haiti is a nation of 9 million people in the Caribbean. It is a former French colony and the poorest country in the Americas. More than half the population live on less than US$1 a day. Why? The row has erupted because thousands of US troops have been flooding into Haiti to take control of relief efforts, but supplies are still not reaching the people quickly enough. How? Friction first emerged when US forces turned back a French aid plane carrying a field hospital from the Port-au-Prince airport last week. US forces have also blocked French and Canadian nationals from boarding planes.