Northern Ireland Far Left Warns Biden as Police Say Attack 'Highly Likely'

Dissident republicans in Northern Ireland have issued a warning to U.S. President Joe Biden as his visit to the U.K.-controlled territory comes amid heightened security concerns stemming from decades-long sectarian unrest.

Biden's first visit to Northern Ireland and the neighboring Republic of Ireland since taking office in 2021 coincides with the 25th anniversary of the Good Friday Agreement. That truce put an end to much of the violence associated with a period known as "the Troubles," waged largely between majority-Protestant loyalists aligned with the United Kingdom and majority-Catholic republicans seeking...