Depleted Uranium Ammunition and Crimea (archived)

Aside from armor-penetrating tank rounds, the US uses DU ammunition for its 30mm GAU-8 Avenger Gatling gun on the A-10 Warthog ground attack jet fighter. The A-10s figured prominently in the Iraq wars and in Afghanistan.

Ukraine last winter requested 100 A-10 jets from the United States and have been secretly training to use the aircraft in combat. If a Crimea offensive takes place, the A-10 may be moved into Ukraine and flown by a combination of Ukrainian pilots and possibly by volunteer former US Air Force pilots.

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How will Russia answer these latest developments? Putin has already sent a warning to Britain about DU ammunition, although what he actually has in mind is not clear. If Russia is watching US activity in rushing the Abrams tanks to the battlefield, including the possibility of the A-10, the situation will get more heated.