To repel an invasion from the East:
Artillery, 155 millimeters
Artillery shells, 152 millimeters as many as possible
Multiple Launch Rocket Systems (“Grad”, “Smerch”, “Tornado” or M142 HIMARS)
Armored vehicles (armored personnel carriers, infantry fighting vehicles, others)
Tanks (T-72 tanks or similar tanks from the USA or Germany)
Air defense systems (S-300, “BUK” or western equivalents)
Military aircraft—MUST HAVE—to deblock Ukraine’s cities and save millions of Ukrainians as well as millions of Europeans)