Russia's President Vladimir Putin speaks during the youth forum 'Seliger-2014' at Seliger lake, northern Russia, on August 29, 2014. Putin insisted that Kiev must enter substantial talks with pro-Russian rebels amid a dramatic escalation of the fighting in Ukraine. AFP PHOTO / RIA-NOVOSTI / POOL / MIKHAIL KLIMENTYEVMIKHAIL KLIMENTYEV/AFP/Getty Images
Putin: Don't mess with us, we're nuclear
Russian Pres. Vladimir Putin has upped the rhetoric over the conflict between Ukraine and Russia. Matthew Chance reports.
02:26 - Source: CNN
Cult of Putin 16 videos
Russia's President Vladimir Putin speaks during the youth forum 'Seliger-2014' at Seliger lake, northern Russia, on August 29, 2014. Putin insisted that Kiev must enter substantial talks with pro-Russian rebels amid a dramatic escalation of the fighting in Ukraine. AFP PHOTO / RIA-NOVOSTI / POOL / MIKHAIL KLIMENTYEVMIKHAIL KLIMENTYEV/AFP/Getty Images
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