The U.K. government is again threatening to unilaterally override large parts of the Brexit deal agreed with the European Union, raising the prospect of a trade war amid a power-sharing crisis in Northern Ireland. U.K. Prime Minister Boris Johnson on Monday will travel to Belfast in a bid to deescalate tensions over the Northern Ireland protocol, part of the post-Brexit trading agreement which requires checks on some goods entering Northern Ireland from the rest of the U.K. The hastily arranged trip comes shortly after Northern Ireland’s largest unionist party blocked the election of a Stormont Assembly speaker — ... (full story)