The David Miliband 2019 Fulbright Speech “Global Politics in the Age of Impunity” is worth a look. Axios covered the speech by the former British Foreign Secretary and looked at some of the highlights. From Axios:

Miliband contends that from the mid-1990s to mid-2000s, the world seemed to be moving toward a future where such values were protected internationally.

But, but, but: “The voters in the West clearly became disillusioned with foreign policy failings, notably in Iraq and Afghanistan,” he says. Economically, globalization in that period was "too unequal for its own good and too insecure for its own good, and therefore unsustainable.”

Miliband adds that leaders took advantage of the backlash. He points to Brexit (which he opposes) as an example of misleading claims meeting public discontent with explosive results.

Miliband is an extremely sober and clear minded individual, and this speech highlights some of the key political changes occurring across the world, with the negative ramifications of those changes highlighted by Miliband. From the speech:

However, the Age of Impunity is born of political changes. It reflects serious shifts in geopolitics. There is a political emergency as well as a humanitarian emergency. The political sea change is that constraints on the abuse of power are being weakened internationally and nationally at the same time. Where the years after the Cold War saw growing civilian protection internationally and a surge in accountable government nationally, so today we see the reverse. The multilateral system is under assault from its cornerstone in the US, and Brexit represents a further attack here in the UK. Meanwhile, checks on executive power at the national level are also being weakened.
This is the new arrogance of power, internationally and nationally, and it needs to be understood and then addressed if the trends towards greater protection of the most vulnerable are to be restored.

The full speech is very much worthy of a look.