If the Fed no longer has the European Central Bank's back, then the ability of the ECB to backstop European sovereign debt will be tested. And it probably won't go well. Remember, these EU member states have large scale deficit spending coming down the pike, to fund defense and AI commitments. And the ECB will be, almost certaintly, back in action to tame the bond yields of the fiscally vulnerable countries. Without global coordination, the will lack the firepower.
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