In a rare show of unity, the first ministers of Scotland, Wales, and Northern Ireland signed a joint pledge on Monday asserting their nations' right to decide their constitutional futures. In a memorandum of understanding, the leaders of the Scottish National Party, or SNP, Plaid Cymru in Wales, an»»»

The September 14 Cardiff memorandum is a coordinated pressure campaign timed to a uniquely weak moment for the union’s defenders — a fragile, freshly installed Downing Street and a fragmented pro-union vote — not a genuine step toward any referendum. Andy Burnham’s already-wobbly “off the table” li»»»