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Inside Putin's Ukraine obsession
By Peter Dickinson
Ukrainian official tells CNN Biden's call with Ukrainian President 'did not go well' but White House disputes account
By Matthew Chance & Jeremy Herb
What are the sanctions on Russia and have they affected its economy?
What are Europe's options in case of Russian gas disruption?
By Nina Chestney
All coverage
'It's a joke': Germany's offer of 5,000 helmets to Ukraine is met with disdain amid Russia invasion fears
By Holly Ellyatt
Ukraine neighbours embrace Nato help but Hungary expresses doubts
By Marton Dunai & James Shotter
How Russia Has Increased Its Military Buildup
By Josh Holder, Michael Schwirtz & Scott Reinhard
State Dept vows Nord Stream 2 will be a 'hunk of metal at bottom of the ocean' if Russia invades Ukraine
By Caitlin McFall
Why Romania is one of Kiev's strongest supporters in Russia dispute
By Borzou Daragahi
Why Do American Elites Want War in Ukraine?
By Raheem Kassam
The Putin Doctrine
By Angela Stent
Latest Ukraine updates: Zelenskyy urges no ‘panic’ over tensions
By David Child & Farah Najjar
Biden's diplomats are flooding the zone on Russia. But even some allies aren't convinced.
By Nahal Toosi
What Putin Wants in Ukraine
By Tom McTague
War With Russia Has Pushed Ukrainians Toward The West
By Amelia Thomson-deveaux & Jean Yi
Russia Won't Start a War With Ukraine Out of the Blue — Look for These 8 Warning Signs
By Kyle Mizokami
Vladimir Putin's Russia and the Role of Security Agencies
By Tatiana Stanovaya
As it weighs action in Ukraine, Russia showcases its new military prowess
By Paul Sonne, Isabelle Khurshudyan & Mary Ilyushina
What Happens Next in Ukraine Could Change Europe Forever
By Bruno Maçães
Ukraine crisis: Nord Stream 2 pipeline could be axed, US warns
By Damien Mcguinness
Ukraine crisis: Vladimir Putin's geopolitical jigsaw
By Steve Rosenberg
Ukraine faces enormous military odds against Russia | News
By John Psaropoulos
Latest Ukraine updates: Kyiv backs US reply to Russia’s demands
By David Child & Linah Alsaafin
US and NATO responses fail to address Russia's main concerns, says Foreign Minister Lavrov
By Tara John, Vasco Sousa Cotovio & Uliana Pavlova
Europe could live with less Russian gas. A complete shutdown would be 'catastrophic'
By Julia Horowitz
Tensions simmer in Ukraine-Russia border crisis
By Ed Upright, Adrienne Vogt & Jack Guy
Russia likely to stay on diplomatic track for next two weeks - Ukraine
By Nikolaj Skydsgaard
Russia, U.S. keep door open to Ukraine diplomacy, but big gaps remain
By Dmitry Antonov, Tom Balmforth & Simon Lewis
Putin says West has not addressed key concerns in Ukraine standoff
By Vladimir Soldatkin & Alexander Marrow
Putin told Macron he did not want to escalate Ukraine crisis - French official
By Sudip Kar-Gupta, John Irish & Mark Heinrich
Nord Stream 2 will not move forward if Russia invades Ukraine -State Dept
By Humeyra Pamuk & Rami Ayyub