A dirty bomb has reportedly been planted in Ukraine and is about to be donated by Ukrainian forces in order to blame Russia and justify a USA / NATO escalation into World War III. 

That's the warning from Russia's Defense Minister Sergei Shoigu, who has reportedly been making a series of calls to leaders of western nations to warn them of this false flag plot. As Mac Slavo writes from SHTFplan.com:

In calls to Western leaders that included the United States, Britain, France, and Turkey, Russia's defense minister said Ukraine is plotting a false flag "dirty bomb" attack. Russian Defense Minister Sergei Shoigu has started warning that Ukrainian forces are preparing a "provocation" with a radioactive device.

Once this radiological attack is initiated, it would of course provide a narrative to the dishonest western press to call for an escalated NATO attack on Russia. Knowing this attack is coming, Russia would be forced into a position of initiating a first strike pre-emptive retaliation, resulting in Russia potentially nuking major cities across the U.S. and Europe. This appears to be the goal of the Barack Obama / Susan Rice / Victoria Nuland / Joe Biden criminal cabal, which clearly wants to escalate this conflict into a global nuclear war so that America is destroyed, covering their tracks for decades of financial looting, kickbacks, bribery, election rigging and other forms of corruption.