**Trump and Danish Prime Minister Mette Frederiksen are positioned for a bilateral meeting during the UN General Assembly in New York next week, driven by the newly announced U.S.-Denmark-Greenland security agreement on Arctic defense.** Trump announced the pact on September 18, 2026, describing it as granting the United States permanent control over Greenland’s security needs, expanded basing and overflight rights, and veto power over non-NATO adversaries establishing bases or sensitive investments there. Frederiksen’s office confirmed the three parties expect to sign the agreement on the sidelines of the UNGA, with the Danish prime minister scheduled to attend the session. Parliamentary approvals in Denmark and Greenland remain required afterward. This follows months of U.S. pressure over Greenland’s strategic importance, including earlier threats of greater control that prompted quiet negotiations through a high-level working group. The UNGA gathering provides the immediate diplomatic venue for leaders to finalize and publicly endorse the deal, which both sides frame as enhancing NATO and Arctic security while preserving Danish sovereignty and Greenlandic self-determination. Trader odds reflect the high probability of a Trump-Frederiksen encounter tied directly to this scheduled signing window.