Mar 23 (Reuters) - U.S. stock index futures fell on Monday as the Middle East conflict intensified with energy infrastructure under threat, sending oil prices surging and pushing investors to reprice U.

Stock futures pointed lower Tuesday, a day after major indexes ended sharply higher, as oil prices returned to gains. Meanwhile, the two-day Federal Reserve meeting on interest rates begins today.

U.S. stock index futures slipped on Tuesday as the Middle East conflict pinned oil prices near $100 a barrel, fueling inflation concerns.

Contracts for the S&P 500 erased earlier gains to fall 0.3% and a Bloomberg gauge of the dollar rose 0.2% after the WSJ report. Asian shares also pared earlier gains after an Iranian lawmaker ruled out negotiations with the US. Gold reversed earlier gains to edge lower for a 10th consecutive day.

Oil prices resumed their rise on Tuesday because of the war with Iran, but U.S. stocks held steadier this time around. The S&P 500 rose 0.2% to add to its gain from the day before, which was its biggest since the war began.

Stock futures are pointing higher Monday after major indexes lost ground for the third consecutive week amid concerns about the impact of the Iran war. Here's what investors need to know today.

March S&P 500 E-Mini futures (ESH26) are down -0.15%, andMarch Nasdaq 100 E-Mini futures (NQH26) are down -0.14% this morning, giving up earlier gains driven by President Trump’s remarks on the Iran war as Treasury yields climbed. The price of WTI crude ...