Western militaries, including the US and NATO, are facing a shortage of ammunition to provide to Ukraine in its fight against Russian forces. The recent US spending bill lacked funding for weapons for Ukraine amid leadership changes, sparking concerns about waning Western commitment despite warnings of critically low ammunition stockpiles. Analysts warn that without timely assistance, Ukraine's ability to defend against Russia's potential offensives is undermined. The US military requests additional funding to provide air defense and ammunition to address the ongoing conflict.