> Obama actually said back in 2014 he didn't give weapons to Ukraine because it would lead them to a useless attrition war that they would lose anyway.

Ukraine had much smaller, and less well trained, armed forces in 2014 to use any weapons that would have been sent; much of the US aid from 2014 on was directed at dealing with capacity building and training, as well as providing basic nonlethal gear like helmets and body armor and a whole bunch of core logistical equipment. Weapons are necessary, but not sufficient, for an effective military.