Financial "stress" in the euro zone has fallen and is now near levels last seen before the economic crisis in 2007, the ECB said on Wednesday.
U.S. stock index futures pointed to a higher open on Wall Street ahead of a deluge of economic data.
The S&P 500 is on track to reach 2,000, but the start of Fed tapering could provoke a fall of 10 percent or more, warned a senior investment analyst.
U.S. stock index futures signaled a flat-to-lower open on Tuesday, ahead of housing market and consumer confidence data.
Ukraine's rejection of a EU trade deal, was met with dismay. However, economic analysts said a move towards Russia and away from Europe could benefit Ukraine over the coming months.
U.S. stock index futures pointed to a higher open on Wall Street on Monday, following a historic international deal over Iran's nuclear program.
U.S. stock-index futures maintained Thursday gains.