Ukraine's failure to intercept a single Russian missile during a large-scale overnight attack this week has raised fresh concerns over Kyiv's dwindling supply of air-defense interceptors as Moscow escalates its ballistic missile strikes on the nearly defenseless capital and other regions.

Kyiv has run out of Patriot interceptors, but allies remain reluctant to supply more.

The shortfall comes amid reports that Washington rejected Ukraine’s request for additional Patriot interceptors and scaled back earlier commitments.