Charges against two men, one of whom worked for oil giant and joint venture TNK-BP, may be part of an effort to increase Russia's control over oil resources.
Tibetans have protested in both countries, which have long accepted Tibetan refugees but restricted their political activities.
Ties between Venezuela and Colombia were restored but tensions appear to linger.
Climate concerns are pushing corporates to do good by doing well. Meanwhile, new research puts a number on the ecological impact of rich country lifestyles on poor ones.
Even as some states are mandating ethanol as part of the fuel mix, new research suggests that some biofuels are less ecofriendly than they seem.