U.S. Vice President Mike Pence (L) and European Council President Donald Tusk attend a joint press conference in Brussels, Belgium, Feb. 20, 2017. U.S. Vice President Mike Pence on Monday reaffirmed "strong commitments" to the European Union (EU), in a bid to allay the bloc's doubts on the new U.S. administration's stance towards it. (Xinhua/Gong Bing)