"A months-long delay in U.S. aid has meant the situation on the battlefield has deteriorated for Ukraine, and cities across the country have suffered under Russian drone and missile attacks due to a lack of air defenses.Congress finally passed the bill this week, and European countries, including the U.K., Germany, Denmark, and the Netherlands, have all recently made further pledges of military aid."In recent months, NATO allies have not provided the support we have promised," he said, adding: "But it is not too late for Ukraine to prevail because more support is on the way."When and how will US aid impact the front lines in Ukraine?After almost seven months of delays, the U.S. Congress finally approved $61 billion in aid for Kyiv, mostly in the form of military assistance.