Technically, Iceland. Practically there are several. And every country has the same veto power. It operates by consensus. So the US which spends close to $1 trillion (over 60% of the total) has the same veto power as Iceland. or slovenia, luxembourg, north macedonia who spend about $500 million and have almost no military resources. trump is absolutely correct to challenge the current nato charter. hell, canada only spends about $44 billion and only has 68,000 troops, 400 aircraft, and 60 ships. it has been sucking at the US military tit since the beginning. trump's method of challenging the status quo is wrong, but the need and intent is right.