US and Iran Trade Strikes for Sixth Day as Diplomacy Hangs in the Balance
The United States and Iran exchanged military strikes for a sixth consecutive day on July 16, with US forces hitting targets near Tehran for the first time in the latest round of escalation and disabling an oil tanker in the Strait of Hormuz. Even as the fighting intensified, both sides sent mixed signals about the possibility of a diplomatic resolution, leaving the region in a state of volatile uncertainty.
Military Escalation Reaches New Heights
According to The Guardian, US strikes on Thursday hit areas around Iran’s capital, Tehran, for the first time in the current wave of fighting. Iranian state media reported air defenses were activated early in the day. US Central Command said it struck Iranian command centers, air defense sites, and missile and drone capabilities “to further degrade Iran’s ability to threaten innocent mariners crewing commercial vessels transiting the Strait of Hormuz.”
In a significant maritime operation, the US military disabled an unladen oil tanker attempting to reach Kharg Island — Iran’s largest oil export terminal — using Hellfire missiles after the vessel ignored multiple warnings. The Curaçao-flagged commercial vessel Belma was struck in its smokestack, according to NPR.
Iran retaliated by launching missiles and drones targeting US assets in Bahrain, Kuwait, and Jordan. Iranian authorities reported that recent days of US strikes had killed more than 35 people and wounded more than 300 others. Tehran accused Washington of carrying out a “barbaric attack” after a cancer hospital in southwestern Iran was evacuated due to strikes nearby, with 211 chemotherapy patients forced to relocate.
The Strait of Hormuz: Strategic Flashpoint
Control of the Strait of Hormuz — a waterway carrying roughly one-fifth of global oil and gas supplies — has emerged as the central issue in the conflict. Iran threatened to halt all energy exports from the Middle East, with a military spokesperson declaring that “regional energy exports are either shared by all or denied to all.” The official said the only way to reopen the strait was for the US to comply with the 14-point Memorandum of Understanding signed last month.
The US reimposed its naval blockade on Iranian ports on July 15, and shipping data showed a sharp decline in traffic through the strait. Nine ships navigated the waterway on Wednesday compared to 13 on Tuesday, according to shipping tracking data cited by The Guardian. India, one of the largest contributors of merchant vessel sailors worldwide, ordered shipping companies not to deploy Indian seafarers on vessels heading for the strait.
Diplomatic Signals Amid the Fighting
In a surprising development, Iran released American citizen Dena Karari, who had been prevented from leaving Iran since December 2024 on espionage charges. President Donald Trump called the release a “gesture of goodwill” on Truth Social, according to The Guardian.
Trump further claimed that “the Iranians want to settle so badly” and said US negotiators had been in touch with Iranian counterparts. However, Iran’s chief negotiator, Mohammad Bagher Ghalibaf, struck a far more confrontational tone, describing the conflict as an “essential and existential war with America” and warning that the MOU could only have meaning if its clauses were fully implemented.
Mediators have struggled to calm the escalating tensions. Pakistan’s foreign ministry spokesperson acknowledged that while “the formula for peace is there,” it was becoming increasingly difficult to bring both sides back to the negotiating table.
Economic Fallout: Diesel at $5 and Calls for a Windfall Tax
The conflict’s economic toll on American consumers is mounting. The average price of diesel in the United States rose above $5 per gallon on July 16, marking a 33% increase since the war began, according to The New York Times. Brent crude oil traded above $85 per barrel — more than 15% higher than pre-war levels, though below the nearly $120 peak reached at the height of the conflict.
Meanwhile, oil companies are reaping enormous profits. According to NPR, the world’s top 100 oil and gas firms made $30 million every hour in excess profits during the early days of the war, according to an analysis by Global Witness and The Guardian. The top six European oil companies made at least $22 billion in the first quarter of 2026 — 43% higher than the same period in 2025.
“That’s as a direct result of oil prices spiking globally,” said Dominic Eagleton, who researches fossil fuels at Global Witness.
These windfall profits have reignited calls for a windfall profits tax. Democratic Senator Sheldon Whitehouse of Rhode Island and Representative Ro Khanna of California reintroduced the Big Oil Windfall Profits Tax Act, which would impose a 50% excise tax on crude oil profits above a baseline, with revenue rebated to lower-income Americans. About a dozen Democratic senators have signed onto the bill.
“We’re actually somewhat generous about letting [the oil companies] keep half of the excess profits,” Whitehouse told NPR, “but we want at least half of it to go back.”
The oil industry has pushed back strongly. Dustin Meyer, senior vice president of the American Petroleum Institute, argued that the proposal would undermine investment certainty. “For investment in any industry, you need certainty,” Meyer said. “And proposals like this erode exactly the sort of certainty that is needed to make the investment that has brought the United States to such an unparalleled position of American energy leadership.”
Analysis: A Conflict at a Crossroads
The dual track of escalation and diplomacy that has characterized US-Iran relations for months shows no signs of converging into a durable resolution. The pattern of “strike then talk” has repeated itself since the collapse of the interim ceasefire on July 8, with each side seemingly unwilling to make the first meaningful concession.
The ambiguity in the June MOU — particularly regarding Iran’s role in ensuring “safe passage” through the Strait of Hormuz — has proven to be a critical flaw. Both sides interpret the agreement differently, with each insisting that ships transit the strait via their own separately designated lanes.
On the economic front, the windfall tax proposal faces long odds in a political environment where it currently only has Democratic support. However, with diesel prices continuing to climb and midterm elections approaching, public pressure could shift the calculus.
What to Watch For
In the coming days, several key questions will determine the trajectory of the conflict: Will the US expand its strikes to include Iranian infrastructure, as Trump has threatened? Can mediators like Pakistan find a path back to negotiations? And will rising fuel prices at the pump translate into political pressure for a ceasefire?
What is clear is that the window for diplomacy is narrowing with each day of intensified fighting. The release of Dena Karari offered a glimmer of hope, but the rhetoric from Tehran — calling the conflict an “existential war” — suggests that a return to the negotiating table remains a distant prospect.