U.S. stock futures inch higher and oil pares back some early gains in the aftermath of sudden U.S. strikes on Iranian nuclear facilities over the weekend. Uncertainty still surrounds Iran’s response to the attacks and how they could impact global oil and gas supplies, while U.S. President Donald Trump speaks about possible "regime change" in the country. Elsewhere, the U.S. Senate is aiming to pass its version of a Trump-backed fiscal bill and traders are keeping tabs on business activity data due out later on Monday.

U.S. stock futures hovered above the flatline, as investors assessed the fallout from a U.S. decision to carry out strikes against Iranian nuclear sites over the weekend.

By 05:20 ET (09:20 GMT), the Dow futures contract was mostly unchanged, S&P 500 futures had increased by 10 points, or 0.2%, and Nasdaq 100 futures had added 46 points, or 0.2%.

The main averages on Wall Street ended in the red on Friday, with investors anxiously eyeing developments in a multi-day air war between Israel and Iran -- and the potential involvement of U.S. military forces in the conflict.

President Trump erased much of this uncertainty when he announced that strikes on three nuclear facilities in Iran had been conducted on Saturday. Markets are now keen to see how the decision, which came after Trump previously suggested that he would take as long as two weeks to deliberate on a possible strike on Iran, could impact sentiment, inflation and interest rates.