Watch FRONTLINE’s documentaries examining the conflict’s evolution, Vladimir Putin’s grievances with the West and crackdown on dissent at home, and the human toll of war.

The fighting enters its fifth year on Tuesday. A U.S.-based think tank says that as many as 1.8 million soldiers may have been killed, injured or missing on both sides.

Russia has occupied about 20% of Ukrainian territory since illegally annexing Crimea in 2014, but its gains after the Feb. 24, 2022, invasion have been slow. NATO Secretary-General Mark Rutte this ...

The footage, originally aired several years ago, showed a map highlighting possible nuclear targets in the United States.

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A map of potential nuclear targets in the US has resurfaced as tensions continue to rise between some of the world's most powerful countries.

At least one man was killed in Kyiv as Moscow launched a wave of drones and missiles, days after the latest round of ...

In the early hours of February 24 2022, standing on the freezing roof of a hotel in Kyiv, the idea that Russia would launch a full-scale assault on Ukraine, despite a troop buildup on the border, ...

Norway controls Svalbard, but a treaty grants Russia, China and others access. Now concerns are mounting over President Trump ...

Nearly four years into its full-scale invasion, Russia controls about 20% of Ukrainian territory. Many of the estimated 3 million to 5 million people who remain in regions under Moscow’s control face ...

If the latter, Washington and NATO more broadly are leaving a major loophole: the Norwegian archipelago of Svalbard. Located nearly 800 miles north of the Arctic Circle, Longyearbyen is the world’s ...