Trump Calls Strait Of Hormuz 'New US Territory' After Iran Warns of 'Fully Offensive' Stance, Keeping Markets On Edge

The latest escalation comes after Iran signaled a shift toward a “fully offensive” military posture following Washington's decision not to extend the existing ceasefire.
President Donald Trump mimics firing a gun during a news conference in the White House briefing room about the war in Iran on Monday, April 6, 2026. (Tom Williams/CQ-Roll Call, Inc via Getty Images)
President Donald Trump mimics firing a gun during a news conference in the White House briefing room about the war in Iran on Monday, April 6, 2026. (Tom Williams/CQ-Roll Call, Inc via Getty Images)
Profile Image
Prabhjote Gill·Stocktwits
Published Aug 18, 2026   |   8:19 AM EDT
Share
·
Add us onAdd us on Google
Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...Loading...
  • U.S. equity futures traded in the red early Tuesday amid escalating tensions in the Middle East and rising oil prices.
  • The 60-day negotiating period between the U.S. and Iran expired without a broader peace agreement on Monday.
  • Iran continues to reject U.S. claims over the strait and has threatened to maintain restrictions on shipping through the critical energy route.

Advertisement|Remove ads.

President Donald Trump escalated his rhetoric over the Strait of Hormuz on Tuesday, posting a graphic on Truth Social labeling the strategically important waterway “NEW U.S. Territory.” 

The post comes after Trump said last week that he would declare the strait a U.S. territory after the U.S. finishes its military campaign against Iran.

Read Next
Loading...
Loading...
Screenshot 2026-08-18 072050.png
Source: @realDonaldTrump/TruthSocial

Trump has repeatedly said the U.S. now controls the strait through a naval blockade and has called for the waterway to reopen. Last week, he told reporters that declaring the Strait of Hormuz a U.S. territory was “a great idea.” The 60-day negotiating period between Washington and Tehran expired on Monday without a broader peace agreement.

Advertisement|Remove ads.

The latest escalation comes after Iran signaled a shift toward a “fully offensive” military posture following Washington's decision not to extend the existing ceasefire. 

Why Is The Strait Of Hormuz Important To Markets?

The Strait of Hormuz connects the Persian Gulf with the Gulf of Oman and is a critical route for global energy supplies. Normal shipping through the waterway has been sharply reduced since the conflict began. According to a Reuters report, only limited tanker traffic has been moving through the strait, while Brent crude rose above $90 a barrel and WTI crude climbed to nearly $85 on Tuesday.

The United States Oil Fund (USO) edged 0.2% higher in pre-market trade. On Stocktwits, retail sentiment around the ETF trended in ‘bearish’ territory over the past day.

Advertisement|Remove ads.

Higher oil prices are also an added pressure on bond markets. The 30-year Treasury yield moved above 5.3%, while rising energy costs have raised concerns that geopolitical tensions could complicate the inflation outlook.

Meanwhile, U.S. equity futures fell in early trading, led by a more than 1% decline in Nasdaq futures. S&P 500 futures slipped 0.5%, while Dow futures were flat and Russell 2000 futures fell 0.3%.

On Stocktwits, retail sentiment around the SPDR S&P 500 ETF (SPY), which tracks the S&P 500, remained in ‘bullish’ territory. Sentiment around the Invesco QQQ Trust (QQQ), which tracks the Nasdaq-100, remained in the ‘neutral’ zone.

Advertisement|Remove ads.

Read also: Bitcoin Holds Near $64K, While Crypto Stocks Slide – Glassnode Says BTC Is Losing Ground To The S&P 500

For updates and corrections, email newsroom[at]stocktwits[dot]com.

Comments
Share your thoughts...

Comments posted here will also appear on symbol pages.

Follow on Google News
Read about our editorial guidelines and ethics policy

Advertisement|Remove ads.