Full embargo: no trading of goods and services whatsoever.
Boycott any international events in the US.
Ignore any US patents, royalties, copyright and similar devices.
Invite usonians abroad that only have an US passport to kindly leave.
Seize all murican assets abroad, like company headquarters, factories, etc.
No travel.
No trading in USD.
The small caveat being that some areas are overly dependent on US (like the EU on AWS and Visa/Mastercard), so step 0 would be (re)building local infrastructure.
Edit suggested action to muricans: follow the Luigi way.
Full embargo: no trading of goods and services whatsoever.
Boycott any international events in the US.
Ignore any US patents, royalties, copyright and similar devices.
Invite usonians abroad that only have an US passport to kindly leave.
Seize all murican assets abroad, like company headquarters, factories, etc.
No travel.
No trading in USD.
The small caveat being that some areas are overly dependent on US (like the EU on AWS and Visa/Mastercard), so step 0 would be (re)building local infrastructure.
Edit suggested action to muricans: follow the Luigi way.
Just stop recognising US copyrights and make the euro the default currency for international trade should do it nicely.