It was the strangest of settings for some very serious breaking news. There was Mika Brzezinski, cuddled up in her flannels on Morning Joe‘s special Christmas set. In the previous segment, Joe Scarborough had grilled Sean Spicer, whom President-elect Trump yesterday named as his White House spokesman, over Trump’s tweet of yesterday in which he said that the US needed to greatly strengthen its nuclear arsenal. Spicer repeatedly refused to say that the Trump tweet came in response from a statement by Vladimir Putin, just hours earlier, announcing Russia’s intention to strengthen its own nuclear arsenal. When the show returned...