The United States has launched a new wave of strikes against Iran, and military experts are warning that the conflict may now be approaching its most dangerous moment yet.

Retired Admiral James Stavridis, the former NATO Supreme Allied Commander, said Tuesday that the latest U.S. action appears to mark a serious escalation after repeated Iranian attacks on merchant shipping.

His warning was stark.

“This is the last turn before the tunnel for the Iranians in terms of Trump’s patience,” Stavridis said during an appearance on CNN.

The phrase instantly captured the gravity of the moment: a fragile ceasefire under enormous strain, a president signaling that his tolerance is running out, and a region where one miscalculation could pull the United States and Iran into a far deeper confrontation.

According to Stavridis, the Trump administration “launched pretty significant strikes” after apparently reaching a breaking point over Iranian attacks on commercial vessels. He suggested that those attacks may have been “a bridge too far” for Washington.

The strikes come at an especially tense stage in negotiations aimed at preserving a ceasefire and preventing a wider military conflict. For days, the situation has appeared unstable, with both sides testing limits and sending signals through force, pressure and public warnings.

Now, experts say, the question is whether Iran will absorb the message — or respond in a way that pushes the crisis past the point of control.

“Let’s hope the Iranians kind of get the signal here and stand down from striking merchant shipping,” Stavridis said.

But his optimism was cautious.

He described the ceasefire as being on “life support.”

That assessment underscored how narrow the path forward has become. The United States appears determined to stop attacks on merchant shipping, while Iran may view the strikes as an unacceptable provocation. In the middle sits the Strait of Hormuz, one of the world’s most strategically important waterways and a potential flashpoint for global energy markets and military escalation.

Former Republican congressman Adam Kinzinger, who appeared on CNN alongside Stavridis, agreed that the ceasefire has been unstable from the beginning.

“This has kind of been the way from the first so-called ceasefire,” Kinzinger said.

He argued that the initial ceasefire may have functioned less as a real end to hostilities and more as a pause — a temporary window for the United States to negotiate a memorandum of understanding intended to stop the fighting.

But now, he said, the Trump administration faces a choice with enormous consequences.

“Now, the Trump administration has a decision to make,” Kinzinger warned.

That decision, he said, comes down to whether the U.S. escalates further in hopes of forcing Iran into a workable agreement — or steps back and risks giving Tehran control over the situation.

“You have to basically escalate to try to compel some answer or some negotiation that actually works out,” Kinzinger said, “or do you just walk away and give Iran the Strait?”

His warning did not stop there.

Kinzinger also raised the question of Iran’s nuclear material, suggesting that walking away could mean accepting an even more dangerous long-term outcome.

The dilemma is brutal.

Escalation could deter Iran and preserve the ceasefire if Tehran decides the cost of further attacks is too high. But escalation could also trigger retaliation, deepen the conflict and make diplomacy almost impossible.

Walking away could avoid immediate war, but critics warn it could embolden Iran, weaken U.S. leverage and leave key security concerns unresolved.

That is why Stavridis’ “last turn” warning resonated so strongly.

Military conflicts often reach moments where leaders still have choices — but fewer than they had the day before. The latest strikes may be one of those moments.

For the Trump administration, the goal appears to be sending a message without igniting a full-scale war. But in the Middle East, messages delivered through missiles can be misunderstood, answered or amplified in ways no government fully controls.

For Iran, the next move may determine whether the ceasefire survives or collapses entirely.

If Tehran stands down from attacks on merchant shipping, Stavridis suggested, there may still be a chance to salvage diplomacy.

If it does not, the region could move quickly from fragile ceasefire to open confrontation.

For now, the situation remains suspended between warning and war.

A ceasefire on life support.

A U.S. president nearly out of patience.

And military experts warning that the next turn may lead straight into the tunnel.