Tehran declared it will not engage in nuclear talks without Washington meeting preconditions, asserting that domestic uranium enrichment remains a non-negotiable red line, following U.S. Vice President JD Vance's calls for Tehran to meaningfully reduce its enrichment capacity, even as regional partners like Qatar facilitate continued message exchanges amid broader hostilities. Concurrently, the USS Abraham Lincoln carrier strike group concluded a lengthy Middle East deployment and returned to the United States. Escalating tensions in the Middle East and projected disruptions along the U.S…