U.S. stock index futures edged lower on Tuesday as conflict in the Middle East entered its fifth day, dampening global investor confidence ahead of the Federal Reserve's upcoming policy meeting.

Markets are concerned about Iran's frequent threats to blockade the Strait of Hormuz, just as the US heads into peak summer demand season.

U.S. stock futures point higher, Victoria's Secret shares rise on a report that an activist investor is building a stake in the lingerie company, and EchoStar stock jumps on a report that President Donald Trump met with officials about the firm's spectrum licenses.

U.S. stock index futures edged higher on Monday as easing oil prices helped calm sentiment despite ongoing attacks between Iran and Israel and increased focus on the upcoming Federal Reserve meeting.

Stock futures were higher on Sunday as investors weighed the impact of the escalating Israel-Iran conflict that shows no signs of any potential off-ramps ahead. Oil prices rallied after Israel attacked key areas of Iran’s energy infrastructure over the weekend,

Dow Jones futures, along with S&P 500 futures and Nasdaq 100 futures, traded little changed ahead of Tuesday's open. The stock market rallied Monday as Wall Street reacted bullishly to reports that Iran is looking to ramp down hostilities with Israel.