Ukraine alleges Russian dirty bomb deception at nuke plantKYIV, Ukraine (AP) — Ukraine’s nuclear energy operator said Tuesday that Russian forces were performing secret work at Europe’s largest nuclear power plant, activity that could shed light on Russia’s claims that the Ukrainian military is preparing a “provocation” involving a radioactive device.Shoigu leveled the charge over the weekend in calls to his British, French, Turkish and U.S. counterparts.Britain, France and the United States rejected it out of hand as “transparently false.”Ukraine also dismissed Moscow’s claim as an attempt to distract attention from the Kremlin’s own alleged plans to detonate a dirty bomb, which uses explosives to scatter radioactive waste in an effort to sow terror.Speaking during a conference call with reporters, Peskov added: “We again emphasize the grave danger posed by the plans hatched by the Ukrainians.”At the White House, U.S. President Joe Biden was asked Tuesday if Russia is preparing to deploy a tactical nuclear weapon after making its claims that Ukraine will use a dirty bomb.“I’m not guaranteeing you that it’s a false-flag operation yet ... but it would be a serious, serious mistake.”Dirty bombs don’t have the devastating destruction of a nuclear explosion but could expose broad areas to radioactive contamination."