BBC News with Julie Candler

The American swimmer Michael Phelps has become the most decorated Olympian in history. He won gold as part of the United States 4×200m free style

relay

team.

Michael Phelps bring this in the America's home won the final of the men's 4x200m freestyles relay. And it is gonna be gold number 15 for Michael Phelps and medal number 19, an Olympic record for Michael Phelps as the USA win from France and China third. Nineteen for Michael Phelps.

Less than an hour earlier, Phelps won silver in the 200m butterfly. His nineteen Olympic medals put him one head of the 18 won by the Soviet gymnast Larisa Latynina.

The wife of an Iraqi Olympic official, who was

abducted

by gunmen in 2006, has called for the International Olympic Committee to renew its efforts to find him. The former president of the Iraqi Olympic Committee, Ahmed al-Sammari, was taken at

gunpoint

along with 37 other officials. Thirteen were released, the others have never been seen since.

President Obama has signed an executive order

imposing more sanctions on

Iran's energy, petrochemical and financial sectors in an effort to

curb

its nuclear program. In a statement, Mr Obama said he was committed to find a diplomatic solution with Iran, but was determined to hold Tehran accountable. Iran insists its nuclear program is designed for peaceful purposes. Kim Ghattas reports from Washington.