Russia's invasion has shuttered opioid treatment programs since 2014. New research shows the challenges Ukrainians have faced in getting care.
The war in Ukraine is destroying the country's cultural heritage on a scale not seen since World War II, according to new research.
As the war in Ukraine heads into its sixth month, with almost 50,000 people killed, both sides are digging in with no signs of letting up.
Scott Sagan digs into Russia’s nuclear threat in the country’s war of aggression in Ukraine and how Vladimir Putin is "the most dangerous man in the world."
Where does the war in Ukraine stand now? And what's the chance Vladimir Putin might use chemical or nuclear weapons? An expert fills you in.
The news and pictures of Russia's invasion of Ukraine may be frightening for your kids. An expert offers tips on the best way to reassure them.
The invasion of Ukraine sparked Cold War worries about Russia's nuclear arsenal. Gary Samore says the risk of nuclear war "is very low."
Vladimir Putin "has created a trap for himself, and however the crisis plays out, it is likely to leave him in a weaker position than he was before."
An expert explains what Russia hopes to achieve by increasing its military presence along the border of Ukraine and why its policies are backfiring.
Nearly 20 years after 9/11, the global war on terror has cost the US an estimated $8 trillion and led to more than 900,000 deaths.
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