US STOCKS-Wall St to open lower on Iraq turmoil
* U.S. considering talks with Iran over Iraq
* Medtronic to buy Covidien for $42.9 bln
* New York factory growth climbs in June
* Futures down: Dow 30 pts, S&P 3.25 pts, Nasdaq 5.75 pts (Adds data, updates prices)
By Chuck Mikolajczak
NEW YORK, June 16 (Reuters) - U.S. stocks were poised for a modestly lower open on Monday, on the heels of the S&P 500's biggest weekly drop since early April, as turmoil in Iraq sparked investor caution.
* The United States is contemplating talks with its arch enemy Iran to support the Iraqi government in its battle with Sunni Islamist insurgents, who routed Baghdad's army and seized the north of the country over the past week. A U.S. defense official said a navy ship with 550 Marines on board had entered the Gulf to support possible U.S. action.
* Geopolitical tensions in Ukraine also flared as Russian natural gas exporter Gazprom reduced supplies to Ukraine after Kiev failed to meet a deadline to pay off its gas debts in a dispute that could disrupt supplies to the rest of Europe.
* The New York Fed's "Empire State" general business conditions index rose to 19.28 this month, the strongest read since June 2010, topping the May read of 19.01. Analysts polled by Reuters had forecast a reading of 15. Continuación...