Denmark has summoned the U.S. envoy after intelligence reports of suspected influence operations in Greenland, a mineral-rich Arctic territory central to offshore oil prospects and critical minerals, Reuters reported on Wednesday, describing the effort as an attempt to promote secession. The development adds urgency to oversight of exploration and mining policy, with Danish officials saying the case could impact licensing timelines and control of future export routes. According to media reports, at least three Americans tied to U.S. President…