"how did he survive Russia as ambassador for several years?"
Whoa, dude, I din't know THAT!
You're right, his liver should have been very well-conditioned after a stint in Rossiya. In fact, it should have been rock-hard and rubberized after a cuppla years there.
Tough place to do binniss because of that - you gotta drink and drink hard and yer always ~OUTTclassed by DaRus at that game. At least in Nippon and Hanguk ya gotta drink, butt nott to the point of being blotto necessarily every time like DaRus do.
OTOH, after a tour of Nova Rossiya, his liver might have been toasted and liver function nil, which would be consonant with an inability to hang on in Eire for more than three munffs.
Butt I take yer point, he prolly lasted only three munffs in Eire because of some personal failing, like being a crook or sumpin.
Or mebbe he just had hockey withdrawal - Rossiya provides plenty of hockey action, butt Eire nary a bitt. So he had to gett back to MamaMoose Canuckistan to 'gett well' after a three munff withdrawal from high stickingology and hard Czeching.