US Vice President Joe Biden has assailed Republican presidential nominee Donald Trump's ability to lead America, branding him as "dangerously uninformed" and "unqualified" while making a strong pitch for Hillary Clinton as the next president.


"Donald Trump is dangerously uninformed... His unabashed admiration for Vladimir Putin, one of the most disruptive and dangerous leaders in the world today, his lack of awareness that Russia has already invaded Ukraine, occupying Crimea '" to his credit, he financially realised, that Crimea is part of Ukraine," Biden said at an election rally in Florida.


"I've known every major world leader for the past 37 years personally. I have never in my career seen as many foreign leaders with such anxiety about the possibility that Donald Trump could be elected president," he said.