Nation ranks as the world's ninth-largest polluter, with China reigning as No 1
Loophole could theoretically allow Russia to increase emissions by up to 36 per cent
Carbon market experts claim lack of political will has hampered JI progress
CBI claims Russia-Ukraine row highlights need for continued investment in energy efficiency, nuclear and renewables
Failure to settle outstanding fees prompts UN to suspend Russia from international transaction log
Russia signals it will not accept binding emission cuts as part of post-2012 deal