The US president says he is worried Yemen is drawing foreign terrorists who once may have gone to Pakistan's border, after a suicide bomber killed more than 90 soldiers in Sanaa.
A double agent allegedly recruited by MI5 and MI6 was a British passport holder, according to American media reports.
An undercover agent who foiled an al-Qaeda plot to blow up a airliner with an underwear bomb is a British national, according to US reports.
US officials say the discovery of a plot involving an improved "underwear bomb" shows militants are determined to build bombs that can pass through airport security.
Khalid Sheikh Mohammed and four others who say they planned the 9/11 attacks on New York and Washington appear in a military court charged with murdering 2,976 people.
A year after US special forces shot dead the world's most wanted terrorist, bin Laden's death has sparked a furious political row. A risky tactic by President Obama - now could it backfire?
MoD tells 700 residents near Olympic site they will be safer with missiles on top of their east London building.
Pakistani Prime Minister Yusuf Raza Gilani is guilty of contempt for refusing to reopen corruption cases against the president, but his sentence was only a symbolic three minutes in the courtroom.
At least 38 people have been killed in a car bomb exploded near the Gwari area in northern Nigeria's Kaduna State on Sunday.
A US soldier could plead insanity if he is charged with the murders of 16 Afghan villagers last weekend, his lawyer tells Channel 4 News.