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Boris Johnson could continue as Mayor of London even if he becomes an MP in 2015, David Cameron has said.
"He obviously wants to complete his second term but I don't think it's impossible to do that and to put yourself forward as a member of Parliament at the next election," the Prime Minister said.
"As a manager, as it were, I want all my star players on the field and Boris is a star player."
It is thought Mr Johnson, who previously served as MP for Henley, may want to run for the North West Hampshire seat currently held by the Chief Whip, Sir George Young, who is stepping down next year.
Footballers at this summer's World Cup will be among the first athletes to face a new testing system designed to weed out doping in sport.
Under the new regime athletes will have blood and urine samples compared over time to create a 'biological passport' that tracks changes in their body over time.
Major sports federations, medics and doping experts agreed to the new system, which they hope will combat increasingly sophisticated doping techniques.
The Duke and Duchess of Cambridge were up before dawn for a solemn remembrance of Australia's war dead.
The couple made an unannounced appearance in the darkness at the Australian War Memorial in Canberra for the early service marking Anzac Day - a national day of remembrance for the nation's fallen, veterans and those still serving.
With the Australian War Memorial lit up behind them, William and Kate quietly arrived at around 5am local time on Friday.
Kate, 32, in a cream scarf and black coat and black leather gloves, stood to William's right, her hands clasped in front of her as they listened to the early readings which were already under way.
A new 'Claimant Commitment' setting out what jobseekers must do to find work in return for benefits have been successfully rolled out across the country.
The Department for Work and Pensions said the agreements had now been adopted in every UK jobcentre, with jobseekers agreeing to take steps to find work or face having their benefits docked.
Among the measures are registering to look for work through the universal jobmatch service or via a recruitment agency.
Jobseekers who fail to follow through with the commitment risk having their benefits docked.
The United States is "ready to act" if Russia does not de-escalate tensions in eastern Ukraine, John Kerry has said.
The Secretary of State said sanctions against Russia are already taking their effect, and are "just a preview of how the free world will respond if Russia continues to escalate what they have promised to de-escalate".
"The window to change course is closing. President Putin and Russia face a choice - if Russia chooses a path of de-escalation, the international community - all of us - will welcome it.
"If Russia does not, the world will make sure that the costs for Russia will only grow."
US Secretary of State John Kerry has heavily criticised Russia for failing to act in accordance with agreements made in Geneva last week.
In a statement, Mr Kerry said Russia was backing "an illegitimate course of armed violence" and supporting destabilising forces in the east of Ukraine.
"One week later, it is clear that only one side, one country is keeping its word," Mr Kerry said.
"The Geneva Agreement is not open to interpretation. It is not vague. It is not subjective. It is not optional."
Campaigners on the Cornish peninsular are celebrating after the people of the region received official minority status for the first time.
There is only a peace process at all at the moment, because it is attached to an American life support machine. The US Secretary of State John Kerry has been to the Middle East more than a dozen times in the last nine months, trying to push the sides closer towards to an agreement.
We know Mr Kerry has spoken to President Abbas expressing his dissappointment with the Hamas deal. Kerry has expressed his frustration over the situation quite openly in the last few months with what he sees as a lack of commitment on both sides to a peace agreement.
The big fear is that he will decide enough is enough and he will turn off that life support machine and widespread violence will follow.