At the summit, Katz spoke with US cabinet members, as well as other global leaders.
Ground-based missiles with a range exceeding 500 kilometers were banned until 2019 under the 1987 Intermediate-Range Nuclear Forces Treaty.
Biden announced a historic joint donation of air defense equipment to Ukraine by Germany, the Netherlands, Romania, and Italy.
The senior US official also said the United States and some NATO allies will announce new steps "to strengthen Ukraine's air defenses and military capabilities to help Ukraine.
Trump's skepticism towards NATO is causing further anxiety this time, as Russia's war in Ukraine has brought conflict to the bloc's doorstep.
As Western pressure mounts on nations like Israel and Armenia to recalibrate ties with Moscow amidst Ukraine tensions, geopolitical alliances are swiftly evolving.
NATO Sec.-Gen. Jens Stoltenberg said North Korea had provided "an enormous amount of ammunition" to Russia while both China and Iran were supporting Moscow militarily in its war against Ukraine.
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