Ex-Gazprom official says decades of the Russian gas giant's work has been 'flushed down the toilet', with export revenues expected to halve this year

• Gazprom's years of work on exporting Russian gas have been "flushed down the toilet," an ex-official said.
• An ex-manager at the gas giant bemoaned the impact of the Ukraine war to Reuters after gas prices fell close to two-year lows. 
• Gazprom's overseas revenues are nearly $3 billion lower than they were a year ago, per Reuters.

Decades of work by Gazprom to build up Russia's natural-gas exports have gone to waste, a former official at the state-run energy giant has said, as Ukraine war sanctions threaten to help cut the company's overseas revenues in half.