Explainer-How Western economic sanctions might target Russia

FILE PHOTO: U.S. President Joe Biden and Russia's President Vladimir Putin arrive for the U.S.-Russia summit at Villa La Grange in Geneva, Switzerland June 16, 2021. Saul Loeb/Pool via REUTERS/File Photo

(Reuters) -Tensions between Moscow and Western powers have raised the prospect of new economic sanctions being imposed on Russia if it attacks neighbouring Ukraine.

The European Union has threatened "massive" sanctions and U.S. Senate Democrats have unveiled a bill to impose sanctions on Russian government officials, military leaders and banking institutions if Moscow engages in hostilities against Ukraine.