Consider this: the next big thing in global capital markets may well be a surge in belt-and-road bond issuance. Infrastructure in general, and the “Belt and Road Initiative” in particular, may be poised for a great leap forward in popularity as an asset class. If this sounds a little improbable, look at what is going on in the wider world economy. United States President Donald Trump's zero-sum game of waging a trade war with China, and potentially Japan and Europe, along with the Brexit idiocy…