Press reports indicate that the United States is in the final stages of planning to send a Patriot battery to Ukraine. This would constitute both a strong statement of U.S. commitment to defend Ukraine and a modest improvement in Ukrainian air defense capability and capacity. At the same time, the move raises several questions, including the need for extensive training, the prospects for long-term sustainment of the unit, and the short- and long-term effects of the effort on U.S. air defense capacity and readiness. Furthermore, Patriot will not be a game changer, being limited by the area it can cover, the single unit being deployed, and the high cost of its interceptors.
(USA-Ucraina) Patriot in Ucraina: cosa significa (fonte: Mark F.Cancian, Tom Karako, CSIS)