LONDON—The euro dropped to its weakest since 2017 on Wednesday after Russia halted gas supplies to Bulgaria and Poland amid rising investor concerns for the regional economy, while stocks staged a small rebound after a mixed bag of corporate earnings.
Russia’s decision to cut the gas flow to Bulgaria and Poland for rejecting its demand to pay in rubles took direct aim at European economies and add to the euro’s woes—giving investors more reasons to snap up U.S. dollars.





