路透社：美國特使 Kellogg 說俄國對北約東擴的擔心是"合理"的。（鏈接，原文）

https://www.reuters.com/world/china/trump-envoy-says-russian-concern-over-nato-enlargement-is-fair-2025-05-30/

Asked by U.S. network ABC News about a Reuters report that Russia wanted a written pledge over NATO not enlarging eastwards to include Ukraine and other former Soviet republics, Kellogg said: "It's a fair concern."