U.S. Defense Secretary Lloyd Austin made an unannounced visit to Kyiv on Monday in a high-profile push to keep money and weapons flowing to Ukraine even as U.S. and international resources are stretched by the new global risks raised by the Israel-Hamas conflict.

Austin, who traveled to Kyiv by train from Poland, met with President Volodymyr Zelenskyy and was scheduled to meet with Defense Minister Rustem Umerov and Chief of Staff Gen. Valerii Zaluzhnyi.

In Kyiv, Austin said Ukraine’s effort to defeat Russia’s invasion “matters to the rest of the world” and that U.S. support would continue “for the long haul.”

Zelenskyy said Austin’s visit was “a very important signal for Ukraine.”