Ukraine wants permission from the west to use long-range Storm Shadow missiles to destroy targets deep inside Russia, believing this could force Moscow into negotiating an end to the fighting.
Senior figures in Kyiv have suggested that using the Anglo-French weapons in a “demonstration attack” will show the Kremlin that military sites near the capital itself could be vulnerable to direct strikes.
The thinking, according to a senior government official, is that Russia will consider negotiating only if it believes Ukraine had the ability “to threaten Moscow and St Petersburg”. This is a high-risk strategy, however, and does not so far have the support of the US.
Ukraine has been lobbying for months to be allowed to use Storm Shadow against targets inside Russia, but with little success. Nevertheless, as its army struggles on the eastern front, there is a growing belief that its best hope lies in counter-attack.
An all out war is unlikely, since if NATO involvement was going to kick that off it would have done so by now.
The next point of escalation that could start something bigger would be stuff like NATO openly sending troops or actively providing fire support.
US hesitation to allow our hardware to be used for this type of attack is much more to do with the political issues surrounding the war being framed as a proxy war instead of defensive support.
The electorates support for “saving the day” and “superior US hardware helping keep a country free” is high. Support for a protracted and complex proxy war without clear right and wrong sides is exhausting and hits too many Iraq/Afghanistan buttons for people to care.
Asking for and publicly being denied permission to bomb targets adjacent to the capitol does just as well at communicating “we can bomb your capitol” as actually doing it.