US, June 21 -- Introduction: A Political Earthquake in Madrid For nearly eight years, Pedro Sanchez has survived what would have ended many European political careers. He has endured minority governments, coalition crises, separatist confrontations, corruption allegations involving allies, and relentless opposition campaigns.

At the same time, Sanchez has become one of the few major European leaders willing to openly challenge Washington under Donald Trump. His government has repeatedly criticized U.S. positions on Gaza, questioned support for military escalation against Iran, and clashed with the White House over tariffs and foreign policy.

Now, however, the greatest threat to Sanchez's political future may come not from international...