Hypersonic weapons are so fast, their speed can change the surrounding air molecules. They can carry a nuclear warhead, fly low and be hard to detect. Because of their potential to transform modern warfare,

Russia will not dare to use nuclear weapons, as that would be an act of madness, according to an interview with the leader aired on Fox News. The host asked what, in the Ukrainian leader’s view, US President Donald Trump could do against Russia as a nuclear power,

It would be madness to start World War III,” he said. “So we don’t even imagine that Russia could use nuclear weapons. Because otherwise, you know, we’d need a new planet. These are insane decisions.” Still,

The Russian president said he expects to make an announcement soon as Moscow actively works on its nuclear arsenal.

U.S. President Donald Trump on Sunday said Russian President Vladimir Putin's offer to voluntarily maintain limits for a year on deployed strategic nuclear weapons "sounds like a good idea". What would it mean for nuclear arms control and what are the main issues ahead?

The Kremlin will negotiate only if missiles and drones bring the pain of war home to Russians, Ukrainian officials say.

Fox News senior strategic analyst Gen. Jack Keane provides an update on the status of the Russia-Ukraine war on 'America Reports.'

With little chance of NATO membership for Ukraine, the country’s Western allies have bought into an alternate strategy for helping it repel Russia: invest billions in Ukraine’s weapons industry so it can better defend itself.

Defense Secretary Pete Hegseth warned Wednesday that the U.S. will “impose costs” on Russia if there is “no path to peace in the short term” in Moscow’s war with Ukraine.  “If there is no