The Biden administration is committed to ensuring “every dollar we have at our disposal” is pushed out to Ukraine before Donald Trump takes office, U.S. Secretary of State Antony Blinken said Wednesday.

Ukrainian President Volodymyr Zelenskyy said air-defense forces repelled Russian attacks targeting Kyiv and other regions in the first such assault on the capital in more than two months as his country prepares for winter.

The Navy’s only air station in Europe restricted its operations to essential personnel Tuesday as Italian authorities issued a weather alert for parts of Sicily.

NATO Secretary-General Mark Rutte has called on Western allies to provide Ukraine with further support “to change the trajectory of the conflict” with Russia.

Russia’s most advanced submarine was spotted for the first time in waters near Japan, the country’s military announced Monday.

North Korea says it has ratified a major defense treaty with Russia stipulating mutual military aid. Russia last week completed the ratification process of the treaty that is considered both countries’ biggest defense deal since the end of the Cold War.

President Andrzej Duda marked Poland’s Independence Day on Monday with a call for sustained U.S. commitment to Europe’s security in view of Russian aggression in the region and argued that Ukraine’s pre-2014 borders should be restored.

The Kremlin rejected reports that President Vladimir Putin spoke last week with President-elect Donald Trump about the war in Ukraine, and a spokesman for Trump refused to comment on what he called his “private calls” with world leaders.