NATO countries are using creative math to meet the U.S. president’s demand to more than double annual spending, partly by expanding what counts beyond soldiers and weapons.

NATO member states signed off on the military alliance’s most ambitious military ramp-up since the Cold War as leaders closed in on an agreement to ratchet up spending at a summit later this month.

The U.S. defense secretary expressed optimism that allied countries would increase their defense budgets, a demand of President Trump’s.