A conflict frozen in time seems a possible outcome after a reshuffle of top officials in Ukraine and Russia.
Russia's cabinet resigned Wednesday, and it looked like an unexpected move. But a Russia scholar says it is part of a plan by leader Vladimir Putin to maintain power after he leaves office.
Crash investigators never give black boxes to aircraft makers but involve them in the process.
How conspiracy theories, such as the Crowdstrike theory that Ukraine was behind the attack of the Democratic Party's server, draw from storytelling techniques.
Ukrainians may grudgingly accept compromise plan to resolve separatist conflict, but in so doing they could hand Russia a wedge to drive between them and the West
As the North Atlantic Treaty Organization celebrates its 70th anniversary with a leaders' meeting in London, five US scholars shed light on NATO's history and its potential future.
President Donald Trump and his supporters exhibit the methods of science deniers. Like anti-evolutionists and flat-earthers, they reject what they don't want to believe and accept what they favor.
The history of the Latin phrase at the centre of the impeachment investigation into Donald Trump.
Ukrainian President Zelenskiy has some not-so-funny issues facing him. Having his country ridiculed in the impeachment hearings won't make solving them easier.
Oligarchs have made headlines recently as the impeachment hearings against President Donald Trump move forward.
Trump's attempt to co-opt Ukraine's precarious position with Russia worsens existing divides inside Ukraine and weakens US influence abroad.
A complex mix of domestic and foreign issues is putting pressure on the new government of Volodymyr Zelenskiy.
Multiple American presidents have viewed US support of Ukraine's security and democracy as critical to the national interest. President Trump's dealings with Ukraine are a major divergence.
The impeachment investigation of US president Donald Trump has formally started, but much has changed since 1974, when Richard Nixon was forced out of office.
What do the people of the Donbas want for their future?
The pro-Kremlin Russian political and media establishment have grown increasingly skilled at spinning stories to highlight US political weaknesses.
What is the 'Steinmeier formula' for eastern Ukraine and why is it so controversial?
The fallout for President Trump from his conversation with Ukrainian President Zelenskiy was swift and harsh. The consequences for Zelenskiy and his country could also be serious.
A former congressional staffer says withholding damning evidence from Congress and using civilians to carry out presidential or intelligence agency agendas links the Ukraine crisis to other scandals.
How Ukraine has reacted to controversy over a phone call between its President Volodymyr Zelenskiy and Donald Trump.