The conversation between President Barack Obama and Saudi King Abdullah early Thursday, Feb. 10, was the most acerbic the US president has ever had with an Arab ruler, debkafile‘s Middle East sources report. They had a serious falling-out on the Egyptian crisis which so enraged the king that some US and Middle East sources reported he suffered a sudden heart attack. Rumors that he had died rocked the world financial and oil markets that morning and were denied by an adviser to the ruling family. Some Gulf sources say he has had heart attacks in the past.