U.S. President Donald Trump walks beside Belgium's Prime Minister Charles Michel (R) upon arriving at the Brussels Airport, in Brussels, Belgium, May 24, 2017. REUTERS/Jonathan Ernst

BRUSSELS (Reuters) - U.S. President Donald Trump arrived in Brussels from Rome on Wednesday ahead of meetings on Thursday with other NATO leaders and the heads of European Union institutions.

Having met Pope Francis at the Vatican earlier in the day, Trump will meet Belgium’s King Philippe and Prime Minister Charles Michel in Brussels later on Wednesday on the fourth leg of his first foreign trip since taking office.