The article, authored by CNN analyst Jim Sciutto, features insights from two senior officials in the U.S. President Joe Biden administration. The White House was specifically concerned Russia might use a tactical or battlefield nuclear weapon, the officials said. The level of planning was unprecedented, CNN said. “That’s what the conflict presented us, and so we believed and I think it’s our right to prepare rigorously and do everything possible to avoid that happening,” the first senior administration official said. The U.S. was not driven to this level of planning by a single indicator but…