As the chaos unfolded, several foreign embassies in Washington issued stay-at-home notices for their citizens, and European leaders deployed strong language to express their condemnation.

As the chaos unfolded, several foreign embassies in Washington issued stay-at-home notices for their citizens, and European leaders deployed strong language to express their condemnation.
Brexit, however, put the peace between these nations at jeopardy. This is because Northern Ireland is part of the United Kingdom, but it shares a border with the Republic of Ireland, which is still an EU member state. This led to many concerns that Northern Ireland and the Republic of Ireland would now need to introduce a hard border, restarting their tensions.