Most dogs can be friendly, given the right circumstances AND the right owner.
Unlike Pitbulls, which were bred for small animal prey drive, Rhodesian Ridgebacks were bred for aggression towards large predators e.g. lions.
Are you an experienced dog owner? What's your experience with large and powerful working breeds? What's your wife's experience?
The safest bet would be to get two puppies, OR an older small dog and a ridgeback puppy.
But again, Rhodesian Ridgebacks are very large and powerful, and need owners who are capable of raising and controlling them.
While I'm openly in favor of supporting Ukraine, it's important to note that the vast majority of this type of military aid is provided in kind.
So really, it's a proposal to give US Defense contractors $100b+ to replenish and restock the DOD with new kit and munitions for the old kit and munitions that we're providing to Ukraine. Which then get into the use accounting tricks e.g. depreciation values, etc.
The annual military aid to Israel is a little different, it's more like a loss leader coupon: give Israel money that they have to spend with US Defense contractors, which then also incentivizes them spending their own budget on complementary systems that can be integrated with those systems, munitions, support contracts, etc.
Although in this case, I believe it's primarily munitions and other kit that the DOD already has in warehouses.
This is oversimplified, but I just see these headline figures always being confused for pallets of cash.