Of course, immediately after it inevitably prove ineffective at changing the situation in any way positive for them*. I do expect though that at least some of the missiles will pass the Russian air defence and kill civilians in Moscow or wherever else they are aimed, which will immediately rise the support for war again and especially for the hawks like Medvedev. Which might be exactly what Biden wants to achieve to prolong the war.
*Also the same was in case of HIMARS, every scarce missile launched to kill civilians in Donbas was one less to launch at Russian army. This is why all the internet warriors for Ukraine vehemently deny any terror bombing of Donbas happened and get very angry when proven otherwise - because it not only make their "fighting for their country freedom" idols evil but also stupid. With a very clear paralel to III Reich which did the same with V1 and V2.
Of course, immediately after it inevitably prove ineffective at changing the situation in any way positive for them*. I do expect though that at least some of the missiles will pass the Russian air defence and kill civilians in Moscow or wherever else they are aimed, which will immediately rise the support for war again and especially for the hawks like Medvedev. Which might be exactly what Biden wants to achieve to prolong the war.
*Also the same was in case of HIMARS, every scarce missile launched to kill civilians in Donbas was one less to launch at Russian army. This is why all the internet warriors for Ukraine vehemently deny any terror bombing of Donbas happened and get very angry when proven otherwise - because it not only make their "fighting for their country freedom" idols evil but also stupid. With a very clear paralel to III Reich which did the same with V1 and V2.
They just really wanted to kill civillians