Ukraine's military is taking credit for a blast that may have killed hundreds of Russian conscripts in Ukraine's far east in the first minutes of the new year.

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Russia's Defense Ministry corroborated the reports on Monday, but only claimed 63 deaths.

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Officials in the so-called "Donetsk People's Republic," a part of Ukraine that Russia illegally annexed in September,

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Expressed public outrage at the attack, placing blame on Moscow for grouping so many soldiers in one place.

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Both sides say the strike took place in Makiivka, a suburb east of Donetsk, a major Ukrainian city that has been under Russian control since 2014,

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But the details of what exactly happened are murky.

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Western journalists are unable to enter the area, and therefore depend on both Russian and Ukrainian sources for information.

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