The US is the largest provider of military assistance to Ukraine, having committed $43.7 billion since the start of the Biden administration.
$43 billion of that assistance has been provided since February 2022.
Much of the deliveries of weapons, non-lethal military equipment, and training from the United States to Ukraine are outright military aid.
There are also some commercial transactions: for example, Ukraine bought the second batch of Javelin anti-tank missiles.
Some states have also given Ukraine loan guarantees or loans on favourable terms as aid.
Not sure if any of the US military assistance was in this category.
NATO, as an alliance, has been clear in its political support of Ukraine and fully supports the provision of bilateral military assistance by individual allies.
NATO is helping to coordinate requests for assistance from the Ukrainian government and is supporting the delivery of humanitarian and non-lethal aid.
Ukraine is not a NATO member, however, and therefore isn’t party to NATO’s mutual defence clause under Article V of the North Atlantic Treaty.
As such, NATO troops will not be deployed on the ground in Ukraine.
Allies have also ruled out imposing a no-fly zone over Ukraine because it would bring Russia into direct conflict with NATO forces.
At the Heads of State and Government summit in Madrid at the end of June 2022 NATO allies agreed a new package of assistance for Ukraine that will provide long term, sustained, support.
That multi-year programme was subsequently adopted at the Vilnius Summit in July 2023.