[MeganC]

“Despite the U.S. publicly declaring an end to arms supplies to Ukraine”

Fulfilling existing and outstanding appropriations for arms is to be expected. No one called for a freeze on all exports.

[BroJoeK]

PIF: "Fulfilling existing and outstanding appropriations for arms is to be expected.
No one called for a freeze on all exports."

MeganC: "The US declared there is no US funds to ship US weapons - they said nothing about other country’s shipping their own weapons."

Right, there are also future shipments of existing authorizations plus other methods of authorizing, including Presidential emergency authorities.
Further, nothing prevents Ukrainians from using their own funds to buy weapons, especially emergency resupplies of air-defense ammunition.

Ukraine's overburdened air defenses include everything from

1. Stinger ManPads
2. NASAMS medium range SAMS
3. Avenger medium-long range SAMS
4. Patriots medium-long range
5. German Skynex short range air defense systems
6. German IRIS-T Surface-Launched-Missile (SLM) systems

None of these work so well without ammunition.

Here are my rough estimates of Ukraine's total war efforts for 2024:

1. ~25% or $50 billion from Ukraine itself.
2. ~25% or $50 billion from the USA
3. ~25% or $50 billion from the E.U.
4. maybe up to 25% or $50 billion from all other sources, including individual countries, NGOs and private individuals.

   = ~$200 billion total, potentially.

In the meantime, Russia's 2024 military budget is estimated at $112 billion.
So, obviously, Russia's numbers grossly overmatch Ukraine's alone, though Western aid to Ukraine could tip the balance in Ukraine's favor, if all happens as is currently reported.