This is definitely worth reading. I'm excerpting it just to get the sceptics, if there are any, to follow the link.
"Moscow has reminded Nato of the importance of Russian goodwill to secure the supply lines of the US-Nato operation in Afghanistan through Central Asia. Alternatively, Nato can become wholly dependent on routes through Pakistan. From where I am sitting, that does not look like a very good move - and where I am sitting at this moment is a hotel room in Peshawar, Pakistan.By siding fully with Iran, Russia has the capability to wreck any possibility of compromise between Tehran and the West, and to push the US towards an attack that would be disastrous for Western interests - and enormously helpful to Russia's."
I'm filing this under The Weekly Great Game. You know, my old series to which I haven't added much lately. While I'm not updating it, others are.
My only critical remark would be this "goodwill" Russia has demonstrated with offering the land transit option is based on a we-are-happy-if-your-soldiers-die-instead-of-ours-as-they-used-to-in-the-1980s-and-we-certainly-do-not-wish-to-repeat-the-experience-but-we-will-sigh-in-relief-and-rejoice-when-you-leave-having-taken-care-of-it-all-for-us sort of logic regarding NATO's efforts in Afghanistan.