This is one of the inevitable and serious consequences of Trump's election.
Not changing tax rates or healthcare rollbacks - those are temporary glitches localized mainly to the US.
The real, lasting and potentially catastrophic effect of this cold shock to the system will be the loosening of traditional bonds and norms that have held the world together in a fragile peace since World War 2.
If other countries can't count on the US as a rational, predictable and "normalized" (powerful) actor, then they will begin forming new alliances, strategies and tactics to compensate.
With a lack of US leadership, these new trajectories are likely to present a weakened counter balance to opposing forces (e.g. Russia) and could, themselves, intersect in destabilizing ways.
The result: More frequent and/or larger scale conflict over the course of decades.
