President Barack Obama is hosting his successor Donald Trump at the White House for what could prove to be awkward transition talks.

he Republican president-elect has questioned Mr Obama's US citizenship and vowed to dismantle his legacy. During the campaign, Mr Obama called Mr Trump "uniquely unqualified", but now says he is "rooting" for him after his shock defeat of Hillary Clinton. Thousands have taken to the streets of major US cities denouncing Mr Trump. White House spokesman Josh Earnest has insisted Mr Obama is sincere about ensuring a smooth handover when he meets Mr Trump, though he added: "I'm not saying it's going to be an easy meeting." Mr Trump flew from New York on his private jet and landed at Reagan National Airport, just outside the nation's capital. he president-elect broke from protocol and barred journalists from travelling with him to cover his first meeting with Mr Obama. The two men are expected to
appear together for the cameras in the Oval Office after a behind-closed-doors meeting. The president-elect is being accompanied by his wife, Melania, who will have a meeting with First Lady Michelle Obama. Mr Obama, who congratulated his successor in a phone call in the early hours of Wednesday, said it was "no secret" that he and Mr Trump had pretty significant differences. But the Democratic president - who had campaigned against Mr Trump - urged all Americans to accept the result of the presidential election. "We are now all rooting for his success in uniting and leading the country," he said. The defeated Mrs Clinton also told supporters Mr Trump had to be given a "chance to lead". Despite the pleas for unity, protesters gathered across the country on Wednesday. Many chanted: "Not my president." In New York, thousands marched on Trump Tower. Sixty-five people were arrested During demonstrations in Oakland, California, some shop windows were smashed and missiles hurled at riot police, who responded with tear gas A mass anti-Trump rally shut down the key 101 freeway in Los Angeles In Chicago, crowds blocked the entrance to Trump Tower, chanting: "No Trump, No KKK, No Fascists USA" Protests also took place in Washington DC, Philadelphia, Boston, Seattle, San Francisco and Portland, Oregon Mr Obama and Mr Trump have a history of mutual hostility. Mr Trump led the charge in challenging the legitimacy of Mr Obama's presidency through the "birther" movement, which falsely claimed the Hawaii-born commander-in-chief was actually born outside the US.