Jim Messina said his Republican Party rivals had "gone off the rails."
IBTimes UK looks at the main Democrat candidates for the 2016 US presidential election.
Watch the final two-part interview with Danae Dholakia, the UK's Special Envoy to Africa's Great Lakes region.
Syrian Observatory for Human Rights says the dead include 332 children, 195 women and 853 men.
March by Britain First in West Yorkshire led to clashes between far-right and anti-fascist groups
Medical charity Médecins Sans Frontières says death toll has risen with numbers expected to increase.
IBTimes UK looks at the main Republican candidates for the 2016 US presidential election.
Presidential hopeful's campaigners accuse State Department of running amok by blocking release of 22 messages.
Pulitzer prize-winning journalist says he has quit his job after the denial.
IBTimes UK looks at Kamerhe, who made clear his intentions to run in 2016.
The 'information for refugees' pamphlet gave instructions on consent, alcohol and public urination.
Inspector Gareth Morris said he welcomed anyone to come and enjoy a night out in Birmingham.
British prime minister says good progress was made, but more talks need to be done.
LME chair Giampi Alhadeff speaks to IBTimes UK about climate change and TTIP.
Move brings Middle East closer to the dream of a nuclear test-free zone.
EXCLUSIVE: Moise Katumbi said that presidential elections can be held this year, backing the UK position.
IBTimes UK spoke to politician, wealthy businessman and TP Mazembe owner on his hopes for the DRC.
Leaked GCHQ files show US and UK monitored Israel's military operations to predict regional developments.
The leader of the Asian nation has been captured giving his foreign counterparts some extremely 'awkward' hugs.
West Ham United vice president has written to the chairs of all professional clubs in Britain.
Even in boycotting a debate with his Republican rivals, front runner Donald Trump managed to upstage them.
Party was hoping to highlight young people in England having the 'lowest literacy levels' in developed world.
The new car modelled on the Cadillac CTS 6 will be unveiled in 2017.
YPG may face opposition from Turkish forces.
The British prime minister will discuss the 'emergency brake' measures with ministers in Brussels.
A leaked report showed how alumni were angered and the college could lose up to £100m funding.
The report also showed that students in England were struggling in maths.
Increasingly ugly feud between Trump and conservative network Fox could cost candidate.
Frontrunner Donald Trump was mocked for not turning up at the Fox News-hosted debate.
The Culinary Workers union claim staffers wore union pins to gain access to workers' dining rooms.