Russia notched record-high oil sales last week despite sanctions and production cuts

• Russia saw record oil sales last week as the nation ships more crude despite sanctions and promised cuts.
• Oil exports rose to 4.13 million barrels a day in the last week of March, Bloomberg reported.
• Still, experts say Russia's economy is at risk as it isolates itself from global markets.

Russia's oil sales notched a new record last week, despite western sanctions and promises of reductions in output.