What might the US midterm elections mean for Allies?

As the US mid-term elections approach, and Donald Trump's domestic approval ratings sit in the doldrums, Dr John Hemmings makes a timely intervention about what various futures might emerge and what they could mean for Allies. Because, as various world leaders from French President Emmanuel Macron to Canadian Prime Minister Mark Carney have said, "There is no going back to the old alliance system that we once knew and understood." Is this simply pessimism for a world that is all about change? Is it just fatalism ro presume that a new balance of alliance membership is preordained to be a bad thing? Haven't we been through worse periods of alliance relationships across Cold War history – and emerged stronger for it? Worth getting your mind around potential future scenarios--short and long-term--before they are here. John certainly provides context and food for thought.