Dear Diary: After a walk-and-talk meeting this morning with British PM David Cameron an Enda Kenny, Taoiseach of Ireland, I took my leave of them by singing "With me a Sheila under me arm and a twinkle in me eye, I'll be off to Tipperary in the..." For some reason they lengthened their stride and I was left behind. My Secret Service detail to hurried me into The Beast, thence to Airforce One and Berlin, where the formidable Arugula Merkel awaits.