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Russia's President Vladimir Putin (C) listens to the head of the Russian army's main department of combat preparation Ivan Buvaltsev (R) while watching military exercises at the Kirillovsky firing ground in the Leningrad region, on March 3, 2014, with  Defence Minister Sergei Shoigu (L)attending. Crimea, the strategic host to tsarist and Kremlin navies since the 18th century, has been under de facto occupation by Moscow-backed forces since Putin won recently parliament's authorisation to send troops into Ukraine. AFP PHOTO/ RIA-NOVOSTI/ POOL/ MIKHAIL KLIMENTYEV        (Photo credit should read MIKHAIL KLIMENTYEV/AFP/Getty Images)
Russia's President Vladimir Putin (C) listens to the head of the Russian army's main department of combat preparation Ivan Buvaltsev (R) while watching military exercises at the Kirillovsky firing ground in the Leningrad region, on March 3, 2014, with  Defence Minister Sergei Shoigu (L)attending. Crimea, the strategic host to tsarist and Kremlin navies since the 18th century, has been under de facto occupation by Moscow-backed forces since Putin won recently parliament's authorisation to send troops into Ukraine. AFP PHOTO/ RIA-NOVOSTI/ POOL/ MIKHAIL KLIMENTYEV        (Photo credit should read MIKHAIL KLIMENTYEV/AFP/Getty Images)

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CNN's Jake Tapper and Phil Black discuss Russian President Vladimir Putin's statement defending the invasion of Ukraine.

Putin threatens more military action

CNN's Jake Tapper and Phil Black discuss Russian President Vladimir Putin's statement defending the invasion of Ukraine.