If Judis has trouble finding Nicaragua on a map, then perhaps he's not the best judge as to whether Radosh was right about the Sandinistas. The Ortega regime can be faulted for many things, but it was not the Stalinist state that Radosh, Horowitz, Leiken, et al., claimed that it was. It held scheduled elections with international observers. It allowed opposition parties and two opposition papers to exist (despite harassment), and allowed the editors of La Prensa to compare it to Nazi Germany while openly rooting for a foreign-based and financed proxy army to violently overthrow the state. Castro certainly wouldn't have allowed that, and neither did Woodrow Wilson during WWI.
As for the Rosenbergs, really, who cares, apart from the capital punishment angle. During a visit to some FAIR comrades in LA, I was asked (I suppose as a litmus test) what I thought of the Rosenbergs. I replied that I thought they were the Flying Dutchmen of the left, and this elicited a few long stares, until Jeff Cohen stepped in and tried to cover my ass. Then we drank a lot of wine.
DP