Ellie Cook is a Newsweek security and defense reporter based in London, U.K. Her work focuses largely on the Russia-Ukraine war, the U.S. military, weapons systems and emerging technology. She ...

Ukraine said it hit 41 of Russia's expensive, hard-to-replace warplanes on June 1 in a meticulously timed operation across three different time zones using drones smuggled over the border.

Alaska is at risk on two fronts: on the front lines of aggression from Russia and China in the Arctic, and we desperately need cheaper energy in both our rural and Railbelt communities.

President Donald Trump on Wednesday said that he spoke over the phone with Russian President Vladimir Putin, who said that Russia would have to respond to a recent Ukrainian attack on Russian ...

Russia and Ukraine traded aerial attacks overnight, resulting in two deaths in each country and many people wounded on both sides, according to officials.

Russia and Ukraine exchanged more long-range drone attacks that have become a staple of the more than three-year war, officials said Friday, as Russian President Vladimir Putin said Moscow is ...

Ukraine has carried out a devastating strike on the only bridge connecting Russia and the occupied province of Crimea, severing the vital supply line for President Vladimir Putin’s forces ...