Allies and partners can replace almost everything except dead Ukrainians. They can’t be replaced, they are the future of the country and the future security providers against Russia no matter what happens. Whether this ends on favorable or unfavorable terms.
What is maddening about the delayed aid is that it’s forcing Ukraine to expend more of its most precious resource, which is people. In a defensive struggle you can trade space, mass, and firepower for time. Ukraine has to choose mass because trading for space means more dead civilians and they don’t have superior firepower. This goes against NATO doctrine and planning which has always been to trade for space until superior firepower can arrive in theater and be brought to bear.
Back to the issue of saving the younger generation. This goes deep to Ukrainian roots and reality. First, Ukraine was an aging, emigre society before the war. They are not a Middle East insurgent nation with an excess of young males.
Second- the deeply agrarian Ukrainians recall the trauma of the Great Famine and Holodomor. First the Ukrainians ate their seed grain. Then they ate the dead, then they starved. A European peasant never eats the seed grain until there is no choice. You eat the livestock, you eat the aging milk-cow, you eat grass and bark to survive the winter before you eat seed grain.
The remaining young Ukrainians are the seed grain of a nation and we need to stop pressing them to consume their seed grain as we find excuses not to donate .0003 percent of our GDP in firepower.