The Trump administration is increasing pressure on the United Kingdom over Zaher Birawi, a London-based activist accused by United States intelligence of working on behalf of Hamas. The United States Treasury Department recently sanctioned Birawi, alleging he used nonprofit organizations to expand Hamas's international influence and fundraising operations, including organizing flotillas to Gaza. These actions have prompted renewed scrutiny in Britain, with officials and lawmakers urging a careful review of the intelligence and emphasizing that the country should not be a sanctuary for individuals linked to terrorist organizations. Birawi, who has lived in the United Kingdom for over three decades and is active in pro-Palestinian advocacy, denies any connection to Hamas and maintains his work centers on supporting Palestinians.