All coverage
U.S. warns of 'horrific' consequences if Russia uses nuclear weapons in Ukraine
By Natasha Turak & Amanda Macias
Defense secretary condemns 'nuclear saber-rattling' but says he doesn't believe Putin has decided to use nuclear weapons
By Ellie Kaufman
Secretary of State Antony Blinken on Russia's war in Ukraine, U.S.-China Relations, the Iran nuclear deal and more
By Scott Pelley
What are tactical nuclear weapons? An international security expert explains and assesses what they mean for the war ...
By Nina Srinivasan Rathbun
Kyiv's western allies boost nuclear deterrence after Putin's threats
By Max Seddon, Henry Foy & Felicia Schwartz
NATO warns Russia of "severe consequences" in case of a nuclear strike
By Sabine Siebold & Bart H Meijer
U.S. Warns Russia of 'Catastrophic Consequences' of Using Nuclear Weapons in Ukraine
By Gordon Lubold & Michael R. Gordon
Biden adviser: US in private talks with Russia over nuclear weapons to avoid public ‘tit for tat’
By Julia Mueller
Opinion | Putin says nuclear threat is no bluff. We should take him at his word.
By Joseph Cirincione
U.S. Warns Russia of 'Catastrophic Consequences' if It Uses Nuclear Weapons (Published 2022)
By David E. Sanger & Jim Tankersley
US Warns Russia of ‘Catastrophic Consequences’ If It Launches Nuclear Attack in Ukraine
By Ken Bredemeier
U.S. grapples with risk of nuclear war over Ukraine
By Dave Lawler
Putin's nuclear threats cannot be ignored - Russia
By Gideon Rachman
How the west became less anxious about Russia's nuclear threat
By Demetri Sevastopulo & Felicia Schwartz
US believes it's unlikely Putin will use a nuclear weapon but threat has 'elevated'
By Katie Bo Lillis & Natasha Bertrand
US warnings against Putin's nuclear threats mark a sobering moment for the world
By Stephen Collinson
U.S. warns Russia of consequences if it uses nuclear weapons
By Alexander Smith
Putin's tactical nuclear weapons could pack the same punch as atomic bombs dropped on Japan
By Brad Lendon
Medvedev raises spectre of Russian nuclear strike on Ukraine
By Guy Faulconbridge & Caleb Davis
Truth or bluff? Why Putin's nuclear warnings have the West worried
By Guy Faulconbridge & Andrew Osborn