The president declined to use Trump's name, saying: 'I figured I'll let him do his advertising for him.'
Narendra Modi was banned from the US in 2005 but will be addressing US Congress on 8 June.
Donald Trump has outraged and enthralled, but will he change tack as presumptive Republican candidate?
Here's a list of some popular personalities who gave up smoking.
The woman was arrested immediately and 'without incident' as the White House went into security lockdown
The US president asked Americans to help veterans and serving military personnel.
Obama has become the first sitting US president to visit Hiroshima 71 years after the world's first atomic bomb was dropped on the city by US military.
US President Barack Obama is set to become first sitting US President to visit Hiroshima on 27 May.
Terrorism, economy, refugee crisis and the South China Sea will be discussed during the summit.
Obama is the third US President to visit the south-east Asian nation since diplomatic relations were restored in 1995.
The US harmed huge numbers of people with the toxic herbicide during the Vietnam war
Obama's comments came after the number of US cases jumped from 48 to 157.
European Commission president made his strongest intervention yet in the EU referendum campaign.
Obama may consider extending arms sales to Vietnam in a bid to further strengthen ties between the former wartime enemies.
Intervention comes after Barack Obama and other world leaders have warned against a 'leave' vote.
Clinton says her contest with Vermont senator is effectively over ahead of June primaries.
With the UK and US manufacturing sectors both suffering a slowdown, technology is even more important to the industry.
Abe says Japanese businesses see UK as a 'gateway' to Europe and investors could be turned off.
Couple celebrate the annual Star Wars Day by dancing to Mark Ronson's Uptown Funk.
To have any chance at all, Trump must stop offending large swathes of voters.
First the Obamas, now Trudeau, anyone next?
Obama ropes in an old colleague to discuss what he should do when he leaves the White House.