I'll start with a really obvious one (ironic, I know): the civil war in Yemen. Every time anyone mentions it in IR circles, it seems like the collective response is, "Ohhhhh--I forgot that was happening. It's still happening, right?" It's not enough to say that there is "too much news" (the most hand-wavy answer of all time). After all, in absolute terms, I think the world is probably safer than it's been in a long time, even if there's a lot of hand-wringing about the long-term consequences of the crumbling liberal international order.
And while Yemen will probably not be the crucial issue of the decade, I'm beginning to understand how/why every generation has FP blind spots ("the enormous condescension of posterity"). People say "Well, you know, we can't discuss everything all the time," and then go back to scrutinizing Brett Kavanaugh's fondness for expensive baseball tickets.
But the real question is this--how did we arrive at a place where theoretical discussions about the rest of the twenty-first century take precedence over the real humanitarian crises of today?
I welcome your "forgotten topics" below!