US Democratic hopeful Bernie Sanders has hit back after Republican front-runner Donald Trump said he had sent protesters to disrupt his rallies.

Donald Trump trains his fire on the protesters disrupting his rallies, branding them "thugs" and extremists, as White House rivals warned the Republican's heated rhetoric was dangerously fanning tensions.

Donald Trump calls off a rally in Chicago after protests against the Republican presidential front-runner led to violent clashes.

The Grand Old Party does not know how to stop Trump and it is their fault. Throughout history it's a party that has won elections mostly on anti-government rhetoric.

In an effort to stop Donald Trump from gaining the Republican Party nomination, GOP leaders, billionaires and tech gurus came together last weekend at the conservative American Enterprise Institute’s annual secretive World Forum in Sea Island, Georgia, reports ABC News.

Donald Trump wins two more states, Michigan and Mississippi, in his bid for the White House.

What a bizarre spectacle the US presidential primary campaigns are unfolding into! There is a lovefest among Democrats who cannot decide who they love more - Hillary Clinton or Bernie Sanders.

Foreign diplomats are expressing alarm to US government officials about what they say are inflammatory and insulting public statements by Republican presidential front-runner Donald Trump, according to senior US officials.

The avalanche of Donald Trump's presidential campaign success reached new levels this Tuesday...

Donald Trump unleashes fiery, off-color rhetoric at Thursday's Republican debate, as American conservatives mull embracing his divisive candidacy or finding a way to derail the controversial billionaire's march to the nomination.

A number of key Republican business leaders, who are backing candidates running against Donald Trump, had discussed about soliciting funds for a “super PAC” that’s been singularly focused on stopping Trump’s rise as the Republican nominee, according to a New York Times report.

Senior Republicans are speaking out against front-runner Donald Trump after his seven-state victory in the race for the party's presidential pick.

Donald Trump and Hillary Clinton each take a giant step toward securing the White House nominations of their parties Tuesday, thumping rivals in a slew of "Super Tuesday" primaries.

Hong Kong's beleaguered leader is nearly 100 times more unpopular than US presidential hopeful Donald Trump, according to Facebook's new "angry-face" button that allows netizens to voice their displeasure on the social network.

Hillary Clinton wins the South Carolina Democratic presidential primary, with polls projecting a large margin between her and rival Bernie Sanders.

White House hopefuls Ted Cruz and Marco Rubio unleashed a barrage of attacks against Donald Trump during Thursday's raucous Republican debate as they sought to halt the billionaire frontrunner's seemingly relentless march to the party's nomination.

Donald Trump wins Tuesday's Republican presidential caucuses in Nevada, giving the billionaire businessman his third straight win in the race for the White House.

Republican Donald Trump will not be president because it's a "serious job", says President Barack Obama. "I continue to believe that Trump will not be president. And the reason is because I have a lot of faith in the American people," said Obama.

Republican Donald Trump and Democrat Bernie Sanders have shaken up the US presidential race with decisive victories in the New Hampshire primary.

Donald Trump, Greek islanders helping desperate migrants, Angela Merkel and the pope -- some may seem more likely than others but all are understood to be in the running for the 2016 Nobel Peace Prize.