US-supplied rocket system is effective, but won't bring victory to Ukraine
US supplied High Mobility Artillery Rocket System
What you need to know:
According to the Institute of War, a US-based think tank, “Ukrainian forces are increasingly targeting Russian military infrastructure with indirect fire and US-provided HIMARS systems deep in occupied territory.”
It concludes that “the increased ability of Ukrainian forces to target critical Russian military facilities with Western-provided HIMARS demonstrates how Western military aid provides Ukraine with new and necessary military capabilities.”