European stocks declined, as banks dragged the Stoxx Europe 600 Index lower, and NATO said Russia sent troops and heavy weapons into Ukraine.

Banks slipped as U.S., Swiss, and British regulators fined lenders including HSBC Holdings Plc, Royal Bank of Scotland Group Plc and UBS AG to settle a probe into foreign-exchange manipulation. Barclays Plc slid 2.2 percent after saying it is not ready to settle the investigation. Enel SpA led utility-related shares lower after third-quarter profit fell more than analysts predicted.

The Stoxx 600 retreated 1.1 percent to 335.09 at the close of trading. The measure had rebounded 9.3 percent from this years low on Oct. 16 through yesterday as the Bank of Japan unexpectedly boosted its stimulus and companies from Vodafone Group Plc to Carlsberg A/S reported better-than-estimated financial results.

Source : Bloomberg