Russia's president, Vladimir Putin, says he supports a 30-day ceasefire with Ukraine in theory. But he adds that Ukraine would need to accept further conditions before a deal could be finalized.

Amid a changing global security landscape and ongoing sovereignty taunts from U.S. President Donald Trump, one military ...

KYIV, Ukraine — During a call between U.S. President Donald Trump and his Ukrainian counterpart, the U.S. leader apparently suggested Volodymyr Zelenskyy consider transferring ownership of ...

What does nuclear deterrence look like in Europe now that NATO is unsure whether the U.S. will be a committed partner? NPR speaks with Paul Cormarie, analyst with the Rand Corporation.