The other option would be to put Admiral Standley back into the CNO position. As Russia is not on the radar as far as the Allies are concerned ( thus no reason to send him to Russia )and he was done with the Pearl Harbour report he could possibly be tapped for the Position again. Also FDR and Standley work well together.

There's also a minute chance of Home or Stone being tapped as well.

Russ / Roller007