latest news from the CNN world news team:

London saddles up and rides »
Six thousand matching black, silver and blue bicycles hit the streets of London as the city launches its ambitious public bike sharing scheme.

Medvedev orders army to fight wildfires »
Wildfires in central Russia have destroyed around 1,000 homes, left five people dead, and prompted Prime Minister Vladimir Putin to call on local officials to resign, Russian news agencies reported Friday. President Dmitry Medvedev has called out the army to help.

Mexican drug lord killed »
Ignacio "Nacho" Coronel, a top leader of the Sinaloa drug cartel, was killed Thursday during a military raid in a suburb of Guadalajara, Mexico, sources with knowledge of the operation told CNN en Espanol.

Official: Outside supply could meet Iran's nuclear fuel needs »
The head of Iran's atomic energy agency says the country's desire for enriched uranium could be met by an outside source, semi-official media reported Friday.

Syrian, Saudi leaders in Lebanon for summit »
The leaders of Syria and Saudi Arabia arrived in Lebanon on Friday, a visit intended to ease a heatening political crisis in the religiously diverse and combustible nation.

July worst month for U.S. in Afghanistan »
Three U.S. soldiers were killed in two separate blasts in southern Afghanistan, making July the deadliest month for American forces since the war started nine years ago.

Daughters: Alleged baby killer was secretive »
A French woman who admitted to giving birth to and smothering eight babies over a 17-year period was secretive but always supportive of her family, two of her daughters said in a local newspaper report published Friday.

Kenya's Prime Minister likely won't commit troops to AU force »
Kenya's Prime Minister says his country probably won't commit troops to an expanded African Union force for Somalia, but he's leaving the door open to "review."

Man clears land mines he laid »
Maneuvering slowly through grassy Cambodian terrain, a caravan of 20 men and women is on a search-and-rescue mission. Dressed in military fatigues, they are guided by a fearless leader who calculates every step and ensures the safest path for his comrades.

Bomb kills soldiers in India »
A bomb blast killed four soldiers and injured 41 others in northeastern India on Friday morning, authorities said.