The “American Century” is over. Done.

Trump has withdrawn the US from more international treaties than I care to remember.

He has backed out of multilateral economic treaties, promising to replace them with bilateral treaties, except that did not happen. Other countries have formed economic treaties among each other, excluding the US.   For example — the EU and Japan have formed a landmark trade-treaty that simply wouldn’t have happened without Trump.

He has withdrawn the US from environmental treaties.

He has started a trade-war with the most important trading-partner of the US.
China.

He has broken a nuclear arms treaty. To repeat: THE US HAS WILLFULLY BROKEN A NUCLEAR ARMS TREATY AND DOESN’T EVEN PRETEND TO HAVE A GOOD REASON FOR THAT.
Iran.

Today, he has betrayed and backstabbed the Kurds,  a military ally of the US.

Today, he has threatened Turkey, another military ally of the US.

He has singlehandedly and without any reason sabotaged the Israeli peace-process.

He has shown that the US is corrupt and can be bribed and bought.
Trump Hotels and Mar-a-Lago.

He has shown that the US will politicize intelligence of other countries for the benefit of the corrupt few.   Ukraine.

He has shown that the US will blackmail other countries for economic favors to the corrupt few.  Again Ukraine.

He has played right into Chinese propaganda that democracy means chaos and instability.

He has played right into Russian propaganda that the US is a country of racism, injustice and corruption and that the era of the US as the leader of the free world must therefore end.

How long will it take until the other countries no longer think of the US as a reliable partner in terms of trade?

How long will it take until the other countries no longer think of the US as a reliable partner in terms of military cooperation?

How long will it take until the other  countries no longer think of the US as a reliable partner in terms of intelligence?

How long will it take until the other countries no longer think of the US as an impartial arbiter between other countries?

How long will it take until the other countries no longer think of the US as a nation without laws, morals or ethics?

How long will it take until the other countries no longer think of the US as a country that can be looked up to in the fight against corruption?

How long will it take for the other countries to start discarding the American ideals of freedom, equality, democracy, liberalism and rights?