The U.K. and Poland signed a defense deal on Wednesday, adding to a growing list of bilateral European security pacts prompted by Russia's war in Ukraine. Under the Northolt Treaty , the two countries pledged to develop medium-range air defense missiles , deepen cooperation on tackling Russian hybrid threats, bolster joint procurement, ramp up military exercises and restated their commitment to “assist one another” in case of an armed attack. They also agreed to deepen ties on energy and