Former US Secretary of State Hillary Clinton has been presented with this year's Chatham House Prize in recognition of her contribution to international diplomacy.
The central London institute also commended Mrs Clinton for her work towards gender equality and opportunities for women and girls.
The annual prize is awarded at Banqueting House in Whitehall to the statesperson deemed to have made the greatest contribution to improving international relations in the previous year.
Bill Clinton has responded to Bono's impersonation attempt with his own impression of the U2 singer.
Appearing on Piers Morgan's CNN talk show, Clinton pulled on a pair of dark glasses before trying out an Irish accent.
Earlier this week Bono delighted the crowd at a Clinton Global Initiative event with a striking impression of the former US president.
U2 singer Bono has been showing off his best American drawl as he impersonated for Bill Clinton.
As he waited for the former US president on stage at the Clinton Global Initiative in New York, Bono began a striking impersonation of Mr Clinton.
To the obvious delight of the audience the U2 frontman described how Clinton "thought he was one his roadies" the first time they met before listing their humanitarian achievements.
When Mr Clinton did arrive the Irish singer leapt back in to his own seat as the former president said he "must be really easy to make fun of."
Bono filled in for Bill Clinton at a meeting of heads of state and business leaders - by jumping into the former US President's chair and doing an impression of him.
The U2 star was on the panel of a meeting of the Clinton Global Initiative in New York, and took over when the politician was late arriving on stage.
Former US President Bill Clinton has tweeted this photo of himself with his predecessor George Bush Snr.
The pair have lunch together every year in the state of Maine, where Mr Bush owns a large estate on the coast.
Mr Clinton drew attention to his host's "western cactus" themed socks, of which he said he was "envious".
Former US President Bill Clinton may be better known for playing the saxophone than his singing, but thanks to YouTube user baracksdubs that could be a thing of the past.
Thanks to some clever editing, Clinton has taken on one of the sounds of the summer, Robin Thicke's controversial hit Blurred Lines.
It is not the first time baracksdubs has got creative with a President and a chart topper - previous clips include Barack Obama singing Daft Punk's Get Lucky, LMFAO's Sexy and I Know It and Carly Rae Jepson's Call Me Maybe.
President Barack Obama is to bestow America's highest civilian honour on Oprah Winfrey and former president Bill Clinton.
The pair will receive the Presidential Medal of Freedom at a ceremony at the White House later this year.
The medal is presented to individuals who have made "especially meritorious contributions to the security or national interests of the United States, to world peace, or to cultural or other significant public or private endeavours."
Ms Winfrey and Mr Clinton will join 14 other recipients, including activist Gloria Steinem and former senator Richard Lugar. Also being honoured is Ben Bradlee, the editor who oversaw Washington Post coverage of Watergate.
Former senator Daniel Inouye of Hawaii and Sally Ride, the first woman astronaut in space, will receive the medals posthumously.
President John F Kennedy created the medal of freedom in an executive order signed 50 years ago. The White House says more than 500 people have been presented with the honour to date.
The White House has tweeted this photo of US President Barack Obama with one of his daughters to celebrate Father's Day.
The Clinton Foundation followed suit by tweeting this photo of former US President Bill Clinton with daughter Chelsea.
Send your Father's Day photos to firstname.lastname@example.org
President Barack Obama has praised George W Bush at the dedication of the former president's library for showing strength and resolve in the days after the September 11 attacks and said if Congress passes immigration reform "it will be in large part thanks to the hard work" of his predecessor.
Mr Obama spoke along with all four living former presidents in a rare reunion honouring one of their own at the opening of the George W Bush Presidential Centre.
Mr Bush, the country's 43rd president, gave a closing speech with tears welling in his eyes."My deepest conviction, the guiding principle of the administration, is that the United States of America must strive to expand the reach of freedom," Mr Bush said.
"I believe that freedom is a gift from God and the hope of every human heart."
The former US President was signed up during an interview with comedian Stephen Colbert and so far has only sent one tweet:
The bio on the account, which has already amassed over 56,000 followers, appears to have been heavily influenced by Colbert: "I am President William Jefferson Billy Jeff Rodham Clinton. Stephen Colbert is my BFF." [Best Friend Forever]
The interview filmed on Saturday in St Louis for at the annual Clinton Global Initiative University and has since been promoting Clinton's new Twitter account: