US Secretary of State Rubio instructed all US embassies around the world earlier this week to send an official diplomatic demarche about Operation Economic Outcast to the most senior level of their host governments, according to Axios citing US officials

A worldwide, simultaneous demarche is an unusually broad instrument: formal diplomatic protests are typically delivered bilaterally and selectively, so instructing every embassy to raise the same matter at the most senior level signals an effort to build a coordinated multilateral front rather than to resolve a discrete dispute. Historically, campaigns of this kind have preceded attempts to isolate a target state economically, through sanctions coalitions, export-control alignment, or pressure on third countries to curtail trade and financial ties, and the pattern is that the demarche comes first and the concrete asks follow. The substantive questions are what Operation Economic Outcast actually designates, which government or governments it is aimed at, and whether host governments are being asked to take specific action or merely to be notified. The tells to observe are readouts from the states that received the demarche, any accompanying Treasury or Commerce measures, and whether allies publicly align or distance themselves, since the difference between a notification exercise and a coalition-building one is what separates headline risk from a genuine shift in trade and sanctions exposure. The sourcing, a single outlet citing unnamed officials, warrants the usual caution pending confirmation. Confidence on the substance is limited given how little of the operation itself is described.