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.
The Founders saw as a regular part of ensuring presidential accountability. A constitutional scholar offers a possible process for a rapid and smooth impeachment inquiry.
The conflict between Congress and President Trump over his dealings with Ukraine's president is just the latest version of a long-running struggle for power between the two branches of government.
The Moscow elections of September 2019 were a referendum on President Vladimir Putin's ruling party. And the opposition's success suggests a looming political crisis for Putin and his regime.
Looking back at Lviv's Soviet past, there are clues about how to preserve history for everyone – not just the affluent.
Documentary or drama? The HBO/Sky series is gripping watching, but sometimes facts make way for artistic licence.
Though the effects were less this time, voters across the globe should remain vigilant against disinformation campaigns and election system hacking.
The HBO series 'Chernobyl' has reignited interest among tourists to visit Pripyat, but growing up in the disaster's shadow has made us wary.
Corruption and poor opportunities are driving out the country's most talented young workers – and damaging Ukraine's long-term development.
Newly inaugurated as president, Zelenskiy is now preparing to fight a parliamentary election – while Russia and the West look on.
In the past decade the EU has been struck by a series of crises that have proven that it is far more vulnerable than previously imagined.
What will the decisive outcome mean for Ukraine's relationship with Russian and the West?
Ukrainians have lost faith in the political class – and are looking for new alternatives. Populism and Russia may benefit.
At worst, more lethal aid could escalate the conflict further. At best, it will continue to keep alive a conflict that has already claimed more than 10,000 lives.