NATO must speed up work on strengthening the protection of its eastern flank from drones, Polish Defence Minister Wladyslaw Kosiniak-Kamysz said after Romania scrambled fighter jets on Tuesday after drone incursions into its airspace.

Holly Williams reports from a NATO warship off the coast of Italy, where America's allies are preparing for a possible conflict with Russia.

While the U.S. has taken part in previous iterations of the military exercise, this year's U.S. footprint was smaller as allied nations are pressed by the Trump administration to put more into European defense.

Business Insider observed US, Polish, and Romanian forces learning to use the Merops system, which has been combat-proven in Ukraine.

NATO Secretary-General Mark Rutte says a US peace proposal has helped bring Kyiv and Washington closer together on the way toward ending the war between Russia and Ukraine, Europe's biggest and deadliest conflict since World War II.

A spokesperson for Poland's special services minister accused Russian intelligence Tuesday of orchestrating a railway blast that destroyed a key track on a route used to deliver aid to Ukraine. Jacek Dobrzyński told reporters that "everything indicates" Russian intelligence was behind the sabotage of Polish railways.