At the NATO summit in Ankara, Turkey, President Donald Trump declared the alliance had failed two tests he set himself, one over Greenland and one over Iran. That framing is worth examining carefully: a president who tests allies rather than coordinates with them is a president whose next move becomes harder to read and harder for markets to price.
The two tests Trump named
Trump told reporters Wednesday he had been watching to see whether NATO members would back American ambitions over Greenland and take a harder line on Iran, which he called "the No. 1 state sponsor of terror." Both answers, he said, were no. "They were unwilling to help us," Trump said. He then acknowledged the tests were deliberate: "I wanted to see if they would be there."
The Greenland question carries real strategic weight. Trump has argued the autonomous Danish territory is essential to U.S. missile warning systems and Arctic defense, and has pointed to what he described as growing Chinese and Russian naval presence in the surrounding waters. The U.S. spends nearly $1 trillion per year on defense. Germany, the alliance's second-largest defense spender, currently accounts for roughly one-tenth of that figure. Trump has now demanded every NATO member reach 5% of their respective GDPs on defense spending.
Iran and the Strait of Hormuz
The Iran front sharpened Tuesday when Trump declared the tentative ceasefire with Tehran "over" after Iranian attacks on trade vessels in the Strait of Hormuz. He called Iran "scum" and "evil" and described further negotiations as "a waste of time." Any sustained disruption to vessel traffic through that corridor carries direct read-through to global energy supply chains, which is where geopolitical friction converts into market volatility most quickly.
The counterargument: Denmark holds its ground
Danish Prime Minister Mette Frederiksen offered the clearest pushback. She reiterated that Greenland "is not for sale," said Denmark is "ready to defend every inch of NATO including our own territory," and called on all allies to respect Greenlandic self-determination and Danish sovereignty. That position has held through repeated American pressure. The risk is that Trump reads the firm Danish stance as further confirmation of alliance unreliability, which could accelerate any formal break with NATO. He has previously threatened to leave the alliance entirely.
On balance
The case for treating this summit as a meaningful inflection point rests on what Trump himself revealed: he is now framing alliance solidarity as a pass-fail exercise with strategic consequences attached, not a policy disagreement to be worked through diplomatically. The line to watch is whether attacks on Strait of Hormuz shipping continue or escalate. That is the thread that runs from the Ankara summit directly into energy markets. The broader NATO question remained unresolved when the summit ended. Frederiksen left with Denmark's position intact.