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Global Affairs Canada said it is 'aware of an arrest involving a Canadian in Russia,' adding that officials have reached out to local authorities to offer consular assistance.

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Ukrainian forces say they control an area of Russia larger than Los Angeles following a shocking incursion earlier this month. Ian Lee got an inside look at how Ukraine's troops were able to enter Russia.

Ukrainian troops have pushed into Russia's Kursk region, taking control of territory in a bid to create a buffer zone and weaken Moscow's ability to resupply its forces. As CBS News' Ramy Inocencio reports, the surprise incursion has lifted spirits in Ukr...

CBS News poll: Harris holds slim national lead over Trump; Ukraine continues offensive into Russia.

Ukraine's incursion into Russia is in its second week as Volodymyr Zelenskyy's forces inch farther into Russian territory. Ukraine's military says it struck two key bridges in Russia's Kursk region while Russia continues strikes inside Ukraine. Ian Lee ha...

After months on the defensive, Ukrainian forces smashed across the Russian border, taking more than 400 square miles of territory, according to Kyiv, whose troops continue to pour into the Kursk region. Ian Lee reports from Kyiv.

Kyiv says it is seeking to establish a 'buffer zone' within the Kursk region, but analysts say the move is also about securing a better negotiating position and improving morale.

Ukraine says its forces are in control of an area in Russia about the size of Dallas. As the surprise incursion into Russian territory continues, Russia was also still striking inside Ukraine. Holly Williams reports.

The remarks are the first time a Ukrainian military official has publicly commented on the gains of the lightning incursion into Kursk that has embarrassed the Kremlin.

Ukrainian troops launched an attack on Russia last week in what Ukrainian President Volodymyr Zelenskyy called an attempt to "push the war out into the aggressor's territory." Ian Lee has the latest.

The Russian military is scrambling to defend its own territory after Ukraine's shock assault inside Russia, as Ukrainian troops advanced into Russia's western Kursk region. Charlie D'Agata reports.

The Kremlin declared a “federal-level” emergency in the Kursk region following the large-scale incursion and sent reinforcements there on Friday.

The new sanctions were announced to mark the fourth anniversary of President Alexander Lukashenko's 'fraudulent' election victory and resulting crackdown on protesters.