* EU sanctions 15 politicians, military leaders over Ukraine
* Futures up: Dow 47 pts; S&P 5.8 pts; Nasdaq 13.25 pts (Adds Coach earnings)
By Angela Moon
* Merck (Dusseldorf: 6MK.DU - news) & Co Inc shares climbed 1 percent in premarket trading after results. Britain's Reckitt Benckiser Group Plc confirmed talks to buy Merck's consumer health business, the latest asset up for grabs in a wave of recent pharmaceutical deals.
* Sprint Corp shares rose 3.5 percent in premarket trading after the No. 3 U.S. mobile provider reported an increase in quarterly revenue, as expected, due to a new billing plan that lowered wireless expenses.
* Twitter is due to report after the market closes Tuesday.
* Coach Inc (NYSE: COH - news) reported a sharp drop in North American sales as the upscale leather goods maker continued to lose ground to fast-growing rivals in the U.S. handbags market. The stock slumped more than 8 percent in premarket trading.
* Archer Daniels Midland Co shares fell 2 percent in premarket trading after its first-quarter profit and sales missed Wall Street estimates.
* S&P 500 e-mini futures rose 5.8 points and were above fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures gained 47 points and Nasdaq 100 futures added 13.25 points.
* The Fed starts a two-day policy meeting later on Tuesday and is expected to again scale back its monthly bond purchase program and provide guidance on when it might raise interest rates.
* In economic data, the Conference Board's consumer confidence index is due at 10:00 a.m. ET (1400 GMT).
* The European Union imposed asset freezes and travel bans on 15 Russians and Ukrainians, including a Russian deputy prime minister, Dmitry Nikolayevich Kozak, over Moscow's action in Ukraine, but steered clear of sanctions on business leaders.
* In Europe, stocks rose as optimism surrounding corporate earnings and mergers eclipsed the crisis in Ukraine, while rising euro zone money market rates and strong German consumer confidence supported the euro.
* The S&P 500 ended higher on Monday after a volatile session, as gains in Apple (NasdaqGS: AAPL - news) and Pfizer (NYSE: PFE - news) offset another round of selling in some high-growth tech shares. (Editing by Bernadette Baum and Nick Zieminski)