LONDON - US stock futures rose, the dollar wavered and oil prices fell below $100 on Wednesday after President Donald Trump said ‌he would indefinitely extend the Iran ceasefire.

That said, optimism about an end to the conflict that has shaken the global economy remained muted as the Strait of Hormuz remained mostly closed and there was no sign of a resumption in US-Iran talks.

S&P futures rose 0.6 percent while Nasdaq futures gained 0.7 percent. Europe's benchmark STOXX index edged ⁠up 0.1 percent in early trade, while MSCI's broadest index of Asia-Pacific shares outside Japan dropped 0.5 percent after hitting a seven-week top on Tuesday.

Thomas ​Mathews, head of markets for Asia-Pacific at Capital Economics, said the earlier ceasefire was widely seen as indefinite so it was not surprising ​the latest announcement had not moved markets much.

"Obviously, any news on the re-opening of the strait is a good candidate for the next big market flashpoint," Mathews added.

Hormuz remains key

Although the conflict caused a sharp selloff in March, equity markets across the globe have swiftly rebounded this month to pre-conflict levels as the prospect of ​a peace deal and the ceasefire spurred a risk-on rally.

That has also left the US dollar, which benefited from safe haven demand in ​March, on the back foot, giving up most of its conflict-induced gains.

"It appears markets were right to assume peak war uncertainty is behind us," said Matt ‌Simpson, a ⁠senior market analyst at StoneX. "Risk seems likely to remain buoyant and dips viewed favorably by equity bulls. The closure of the Strait of Hormuz is already priced in."

The dollar index  which measures the US currency against six peers, was last at 98.27. Although it is hovering near its highest in a week, it is down 1.5 percent in April after rising about 2.3 percent in March.

Oil prices ​dipped, with Brent crude futures ⁠down 32 cents or 0.3 percent at $98.16 a barrel after nearly touching $100 earlier in the session.

While oil prices have come down from their March peaks they are still well above pre-conflict levels, worrying investors that elevated energy ​prices could quicken inflation and keep global rates higher for longer.

Warsh senate appearance

Investors parsed comments from Federal ​Reserve chief nominee Kevin ⁠Warsh as he tried to assure US senators considering his confirmation to lead the central bank that he would act independently of the White House.

Warsh said he had made no promises to Trump about cutting rates and called for a new approach to controlling inflation and a communications overhaul that ⁠could discourage ​his colleagues from saying too much about the direction of monetary policy.

Separately, data on ​Tuesday showed US retail sales rose more than expected in March as the conflict with Iran boosted gasoline prices and led to a record surge in receipts at service stations, while ​tax refunds underpinned spending elsewhere.