Ukraine's most controversial weapons aren't a 'silver bullet,' but they are giving Kyiv's forces what they desperately needed

• Ukrainian forces have been using controversial US-provided cluster munitions for several weeks.
• These deadly weapons threaten Russian positions and help conserve Kyiv's artillery stockpiles.
• A war expert told Insider that while these munitions are effective, no weapon is a "silver bullet."

It's been several weeks since Ukraine received controversial cluster munitions from the US, and Kyiv's forces have been making good use of the deadly weapon to hammer Russian positions on the battlefield.