The Bulgarian service Obektivno, citing Pentagon budget documents, reports that the expiration date of some older ATACMS missiles, which were intended for Ukraine, expired in 2015. This was already noted at the beginning of 2024 by Newsweek,

The range of Western long-range ATACMS and Storm Shadow missiles allows them to hit several military airfields in the Kursk Oblast of russia.This is reported

In a major policy shift, the Biden administration has authorized Ukraine to use the ballistic missiles within Russia.