October 7, 2023 did not create the conflicts that have shaped the Middle East for decades. The Israeli-Palestinian conflict, the Iran-Israel rivalry, competition between regional powers, and the struggle over the American role in the region all predated it.

But October 7 was an accelerator. It broke assumptions about deterrence, connected conflicts that had previously been managed as separate arenas, and set in motion a chain of events that transformed the regional balance.

Three years later, ten changes stand out.

1. Palestine Returned to the Centre of Regional Politics

Before October 7, there was a growing assumption that the Middle East could move forward while leaving the Palestinian question unresolved. The Abraham Accords had established relations between Israel and several Arab states, while negotiations over possible Saudi-Israeli normalisation appeared to point towards a new regional architecture.

October 7 shattered that assumption.

The Gaza war returned Palestine to the centre of Arab public opinion and regional diplomacy. Normalisation has not disappeared, but it has become politically more complicated. The broader lesson is difficult to ignore: regional integration involving Israel may continue, but building a stable Middle Eastern order while indefinitely bypassing the Palestinian question has become much harder.

2. Separate Conflicts Became One Interconnected Regional Theatre

Before October 7, Gaza, Lebanon, Syria, Iraq and Yemen could still be treated as largely separate security theatres.

That distinction has weakened dramatically.

War in Gaza activated the Lebanese front. The Houthis turned the Red Sea into another theatre of confrontation. Iraqi armed factions targeted American and Israeli interests. Syria became increasingly entangled in the confrontation. Eventually, Iran and Israel moved from indirect confrontation to direct exchanges.

The result is an increasingly interconnected regional security environment in which escalation in one arena can rapidly affect several others.

3. The Iran-Israel Shadow War Became a Direct Confrontation

For decades, Iran and Israel largely avoided sustained direct warfare. Their struggle was fought through intelligence operations, cyberattacks, assassinations, Israeli strikes in Syria and Iran’s network of regional allies.

That barrier has now been broken.

The direct exchanges between Iran and Israel beginning in 2024, followed by the much larger confrontations that came afterwards, changed one of the fundamental rules of Middle Eastern security.

The significance goes beyond individual attacks. The Iran-Israel conflict can no longer be understood simply as a proxy war. Direct military confrontation has become part of the strategic landscape.

4. Iran’s “Axis of Resistance” Was Weakened—but Not Eliminated

The regional network Iran spent decades constructing has undergone perhaps its greatest transformation.

Hamas suffered enormous military losses. Hezbollah was badly weakened and lost much of its senior leadership. The fall of Bashar al-Assad’s government in Syria removed one of Tehran’s most important state allies and disrupted the geographical network connecting Iran to Lebanon.

Yet declaring the end of the axis would be premature.

The Houthis demonstrated a capacity to affect international shipping far beyond Yemen. Iraqi factions remain important political and military actors. Iran has also sought to adapt its relationships with its remaining partners.

What has occurred is therefore better understood as a restructuring of Iran’s regional network rather than its disappearance.

5. Syria Moved From the Iranian Axis to a New Regional Competition

The fall of the Assad government was another major consequence of the regional transformation accelerated after October 7.

For decades, Syria had been central to Iran’s regional strategy. It provided Tehran with a state ally in the Levant and an essential geographical connection to Hezbollah.

That structure has been broken.

Iran’s influence has declined sharply, Turkey has acquired greater weight, Israel has expanded its military activity, and Arab and international actors are competing to shape Syria’s future.

Syria has consequently moved from being a relatively predictable component of the Iranian-led axis to becoming one of the principal arenas in which the region’s new balance of power is being negotiated.

6. Israel Became Militarily More Dominant—but Not Necessarily More Secure

The wars following October 7 demonstrated Israel’s extraordinary military and intelligence capabilities.

Israel severely degraded Hamas, struck Hezbollah’s leadership and military infrastructure, expanded operations in Syria, and demonstrated an ability to strike targets deep inside Iran.

But military superiority raises another question: can battlefield dominance be converted into a sustainable political order?

Weakening Hamas does not resolve the Palestinian question. Weakening Hezbollah does not automatically stabilise Lebanon. Damaging Iranian military capabilities does not necessarily end the strategic competition with Tehran.

This creates one of the central paradoxes of the post-October 7 Middle East: Israel has demonstrated greater military power while the regional environment around it has become more unstable.

7. The Gulf States Became Even More Important

Another important shift is the growing diplomatic and economic weight of the Gulf states.

Saudi Arabia, Qatar and the United Arab Emirates were already becoming increasingly important before October 7. The conflicts that followed accelerated that trend.

Qatar became central to mediation. Saudi Arabia expanded its diplomatic role while attempting to protect its ambitious economic transformation from regional instability. The UAE continued building extensive economic and political networks across the region.

Their interests are not identical, but they share an important priority: preventing permanent regional warfare from undermining economic development.

The centre of gravity in Arab politics has consequently continued moving towards the Gulf.

8. The Red Sea and Strait of Hormuz Became Front Lines

October 7 also changed the geography of regional conflict.

The Houthis demonstrated that a non-state actor operating from Yemen could disrupt one of the world’s most important maritime trade routes. Attacks around the Red Sea forced shipping companies to reconsider routes and drew outside military powers directly into the crisis.

At the other end of the Arabian Peninsula, the Strait of Hormuz has become increasingly central to confrontation with Iran.

This has connected Middle Eastern security even more closely to the global economy. A conflict beginning in Gaza or involving Iran can now quickly affect shipping routes, energy supplies, insurance costs and international trade thousands of kilometres away.

9. America’s Attempt to Step Back From the Middle East Became Harder

For years, Washington has tried to reduce the resources devoted to the Middle East and concentrate more attention on China and the Indo-Pacific.

October 7 demonstrated how difficult that strategy can be.

The United States was pulled back into regional military operations: supporting Israel, protecting shipping, responding to attacks against American forces and managing escalating confrontation with Iran.

This creates another contradiction in the emerging regional order. Washington wants its Middle Eastern partners to assume greater responsibility for regional security, but repeated crises continue to draw American military power back into the region.

The question is therefore no longer simply whether America wants to leave the Middle East. It is whether the Middle East will allow Washington to disengage.

10. The Old Middle East Is Disappearing, but a New One Has Not Yet Emerged

Perhaps the most important change is also the hardest to define.

The regional order that existed before October 7 has been badly disrupted. The old Iran-Israel rules of deterrence have changed. Iran’s network of allies has been weakened and reorganised. Syria has undergone a fundamental transformation. Israel’s military position has strengthened while its political challenges have deepened. Gulf states have gained influence. The Palestinian question has returned to the centre of regional politics.

But none of this has yet produced a stable alternative.

There is no clear new balance of power and no broadly accepted regional security architecture. Instead, the Middle East appears to be passing through an extended transition in which several powers are simultaneously testing how far they can reshape the regional order.

Bottom Line: October 7 Was an Accelerator

It would be misleading to attribute every subsequent transformation to October 7. Many of these trends were already underway: Iran and Israel were already engaged in a shadow war, Gulf states were already rising, Washington was already trying to reduce its regional military burden, and Syria was already deeply fragmented.

October 7 changed their speed and direction.

It connected previously separate conflicts and forced regional actors to make choices they had previously tried to avoid. Most importantly, it broke several assumptions on which the previous regional order rested: that the Palestinian issue could be contained, that Iran and Israel would avoid direct war, that proxy conflicts could remain geographically limited, and that economic integration could gradually replace geopolitical confrontation.

Three years later, the Middle East has not yet found a new equilibrium.

October 7 did not create a new Middle East. It accelerated the breakdown of the old one—and opened a struggle over what will replace it.