Stocks on both sides of the Atlantic slumped overnight amid increased concern about the growing crisis in Ukraine and the potential for war with Russia.
Russia's ruble sank to a record low, while the country's key stock index plunged 11 per cent. Diplomatic efforts ramped up on Monday with UK Foreign Minister William Hague visiting Kiev, a day before US Secretary of State John Kerry is to arrive.
In afternoon trading in New York, the Dow Jones Industrial Average dropped 1.28 per cent, the Standard & Poor's 500 Index shed 0.99 per cent, while the Nasdaq Composite Index fell 1.23 per cent.
Declines in shares of Visa, down 2.3 per cent, and those of 3M, down 1.9 per cent, led the Dow lower. All 30 members of the index were down.
Some analysts said the decline on Wall Street was partly due because of the recent rally-the S&P 500 had closed at a record high on Friday.