abdominal

pain and

dizziness

shortly after being appointed to the job. Mark Lowen reports from Athens.

In his resignation letter to the prime minister, Vassilis Rapanos said he was

stepping down

due to ill health. He'd been

hospitalized

over the weekend after apparently fainting. But there is speculation that he was unhappy with the makeup of the cabinet, and that other reasons may lie behind that decision. It spells more yet more turbulence for the new government after the prime minister himself was admitted to hospital for an eye operation, forcing Greece's international lenders to delay their visit to Athens originally planned for today. Several names have now been

touted

as Mr Rapanos's replacement, including the former Prime Minister Lucas Papademos.

The United States Supreme Court has upheld a key part of Arizona's immigration law, which allows state police to stop and check the identity of anyone who might be in the country illegally. President Barack Obama said he was concerned about the practical impact of the law, which gives police the right to demand proof of US citizenship from suspects even without probable cause. Arizona's Governor Jan Brewer welcomed the ruling.

"Arizona did not ask for this fight, nor did it seek out the task of having to confront illegal immigration. We cannot forget that we are here today because of federal government has failed the American people regarding immigration policy. So today is a day when the key components of our efforts to protect the citizens of Arizona, has unanimously been