Russia has ties to world energy and financial markets and is home to major foreign partnerships and investments, so any measures will have repercussions outside the country
The MSCI world equity index, which tracks shares in 50 countries, was up 0.3% on the day at 1203 GMT, its first gain after three days of drops, each exceeding 0.9%
Rather than list or seek a private sale, the US investor is opting to recapitalise Mileway, Europe's largest owner of last-mile logistics
Against the greenback, the single currency climbed 0.4% to $1.1346, and within striking distance of Monday's high of $1.1369 as European stock futures rebounded on the news
European stocks fall 2.6%, Nikkei down 2.2% as US warns Russia could invade Ukraine at any time; Brent rises above $95 barrel before stalling
Europe's STOXX 600 was down 0.9%, Nasdaq and S&P 500 futures were down 0.7% and 0.5% respectively
Facebook owner Meta Platforms surged more than 5%, ending four sessions of deep declines that saw it lose almost a third of its value.
The euro edged up on Wednesday but was off Friday's three-week high, as traders looked for clues as to when the European Central Bank will hike interest rates
MSCI's broadest index of Asia-Pacific shares outside Japan added 1.5% to its highest in two weeks, helped by a 3.8% gain in Hong Kong-listed tech stocks
The euro retreated as the European Central Bank tried to cool interest rate hike expectations.
Oil and mining shares were among the biggest gainers on the pan-European STOXX 600, after FTSE-listed BP reported a $12.8 billion annual profit
Euro weakened for a second consecutive day on Tuesday after European Central Bank President Christine Lagarde said there is no need for big monetary policy tightening in the euro zone
Markets are on alert for rate rises in both the euro zone and the United States after the ECB last week was considered to have adopted a more hawkish tone.
Asian equities held firm overnight and Wall Street futures rebounded due to better-than-expected earnings from Amazon, which lifted the company's shares about 14% in after-market trade
Strong earnings from Apple provided some encouragement for battered tech and US markets, but traders were struggling to draw a line under a global selloff that has now firmly taken root
The move is attributed to fears over tensions between Russia and the West and the prospect of monetary policy tightening.
Oil prices pulled back too as another bout of risk aversion spread across markets and sent traders looking for safety in government bonds.
Gains in Asia helped to counter the pullback in Europe to keep the MSCI all country stock index in positive territory, up 0.16% at 728 points, but still down about 3.8% so far this year.
London's traders were enjoying their final day of festive rest, but mainland Europe saw a lively start
Europe's STOXX 600 rose 0.1% at 0857 GMT and the MSCI world equity index, which tracks shares in 50 countries, was also up 0.1%. Asian shares were broadly higher amid thin year-end liquidity