(BBC) BP will do a key test on its leaking Gulf of Mexico well to see if the flow of oil can be shut off with the help of the newly-installed cap.
(BBC) BP says it is making progress with its efforts to replace a containment cap on the leaking well in the Gulf of Mexico.
(BBC) Is the humanitarian effort after the Haiti quake working?
Underwater robots successfully remove a leaking cap as BP tries again to halt the Gulf of Mexico oil leak.
(BBC) What fate awaits deported Russian agents' children?
Fourteen people exchanged in Vienna, in the biggest spy swap since the Cold War, are flown to Russia and the US.
(BBC) Speculation mounts about a US-Russia Cold War-style prisoner swap as 10 suspected Russian spies are due in court.
The US federal government files a legal challenge to a controversial law passed by Arizona to target illegal immigrants.