New Delhi, Feb. 16 -- Ukrainian President Volodymyr Zelenskyy has warned that Ukraine's ability to survive Russia's invasion hinges on continued military support from the United States. He described US aid as "critical" to Ukraine's future.

"Probably it will be very, very, very difficult. And of course, in all the difficult situations, you have a chance," Zelenskyy told NBC News, on the sidelines of the Munich Security Conference. "But we will have low chance, low chance, to survive without support of the United States. I think it's very important, critical."

He added, "I don't want to think about" the possibility of fighting against Russia without American backing.

Zelenskyy also expressed concerns that without long-term US military a...