Today, Theresa May will hold face-to-face talks with US President Donald Trump in the Oval Office.
The pair will spend about an hour together in what will be the first visit by a foreign leader since Mr. Trump became president.
These talks are the beginning of a new world order in which countries will pursue their own domestic and foreign policies.
Today, the Supreme Court of the United Kingdom will rule whether Parliament or ministers have the power to begin the Brexit process.
In November of last year, the High Court in London ruled that the Brexit procedure cannot be started without the approval of parliament. After the court statement, the government appealed to the Supreme Court.