Republican Donald Trump has de facto declared himself the winner of the US presidential election. Speaking to the supporters, he promised to solve problems with the US border, according to RBC-Ukraine correspondent and CNN. “This is a political victory that our country has never seen before,” he said, adding that he won the election with more votes than another candidate for the US presidency, Kamala Harris. During his speech to supporters, the Republican called them “the greatest political movement of all time” and promised to solve the border problems as well as other “American problems.” “I…