Assault on key gas hub Sudzha highlights Europe’s continued reliance on Russian energy.
US sanctions and years of mismanagement have crippled Venezuela’s oil-based economy and poses challenges for new leader.
Fears grow of a large oil spill after tanker carrying 1.4 million litres of fuel capsizes off the coast of Manila.
Beryl made landfall near Texas town on Monday, posing problems for the heart of the US energy sector.