Key risk is air defense. How pause in US aid will impact Ukraine

US President Donald Trump has decided to "pause" military aid to Ukraine. The exact amount and type of aid Ukraine will miss remains unclear to everyone.

President Volodymyr Zelenskyy, following reports of halted assistance, instructed Ukraine's foreign and defense ministries to contact the US for a clear response:

"People should not have to guess. Ukraine and America deserve a respectful dialogue and a clear position from one another. Especially when it comes to protecting lives during a full-scale war," he said.

The suspension likely affects aid under the Ukraine Security Assistance Initiative (USAI). "Currently, the 2025-2026 supplies are in question," Oleksandra Ustinova, head of the Holos parliamentary faction, told LIGA.net.

Here is a brief summary of how critical the loss of American support is for Ukraine—and what consequences it may have.