Who has got who over a barrel? G7 leaders are pushing the idea of capping the price they pay for Russian oil and gas, effectively forcing Moscow to choose whether to supply at a discount or cut off the revenue stream of its pipelines.

Who has got who over a barrel? G7 leaders are pushing the idea of capping the price they pay for Russian oil and gas, effectively forcing Moscow to choose whether to supply at a discount or cut off the revenue stream of its pipelines.