"The visit will reaffirm America's steadfast commitment to one of our closest European allies and emphasize the administration's priority of strengthening NATO's collective defense," the White House said in a statement yesterday.
Trump will deliver a major speech during the visit, and attend the Three Seas Initiative summit as a symbol of Washington's "strong ties to Central Europe," it said.
The Group of 20 summit takes place in Hamburg on July 7- 8.