KYIV, Ukraine — Ukraine urgently needs artillery and air defenses from its allies in order to continue defending itself from Russia, said Ukrainian President Volodymyr Zelenskyy, rejecting the idea that the war had reached a stalemate two years on from Russia’s invasion.Speaking to NBC News on Sunday from the sidelines of the “Ukraine. Year 2024” forum in Kyiv, Zelenskyy said Russian President Vladimir Putin wants to wage a war farther into Europe, toward Poland and the Baltic states. Saturday marked two years since Russia invaded Ukraine, which has seen 31,000 soldiers killed in…