Ukrainian President Volodymyr Zelenskyy says Kyiv is willing to turn the parts of the Donbas region that his troops currently control into a demilitarised zone (DMZ) if Russia also commits to keeping its soldiers out of this eastern region of Ukraine.

Zelenskyy’s comments represent Ukraine’s biggest territorial concession so far as he faces mounting pressure from both Russian military advances and United States President Donald Trump to agree to a ceasefire with Moscow.

The Ukrainian president also spoke of a second DMZ near the Zaporizhzhia Nuclear Power Plant, Europe’s largest, which is currently controlled by Russia. The DMZ proposals, he said, were part of a 20-point peace plan seeking the end of the Ukraine war that Zelenskyy on Tuesday said was backed by the US.

Here is what we know about the plan and whether demilitarised zones could work in Ukraine:

What is the 20-point peace plan?

Zelenskyy unveiled the plan in a two-hour briefing with journalists, reading aloud from a highlighted and annotated copy. The plan was formulated by negotiators from Washington and Kyiv in Florida over the weekend.

Here’s where negotiations stand on key issues:

• Ukraine’s NATO membership: Russia has insisted from the start of the war that it will not accept Ukraine as a part of NATO. The Trump administration, too, has made clear that Ukraine must give up its hopes of joining the military alliance. But Ukraine continues to resist pressure to introduce constitutional amendments explicitly stating that it will stay neutral and not seek NATO membership. “It is the choice of NATO members whether to have Ukraine or not,” Zelenskyy said on Tuesday. “Our choice has been made. We moved away from the proposed changes to the Constitution of Ukraine that would have prohibited Ukraine from joining NATO.”
• Territorial concessions: Zelenskyy said any proposal requiring Ukraine to withdraw its troops would have to be approved through a national referendum. Ukraine has repeatedly pointed to its constitution, which prevents the government from changing the country’s borders on its own. But many analysts believe that Ukraine might need to settle for a middle path – not recognising Russian-occupied regions officially while acknowledging that it does not actually control them.
• Elections: Zelenskyy said Ukraine would hold a presidential election only after a peace agreement is signed. US President Donald Trump has been pushing for elections in Ukraine while Russia has used the absence of elections during the war to question Zelenskyy’s legitimacy.
• Demilitarised zones: Zelenskyy said any areas that Ukraine pulls out from will become DMZs, which he also called free trade zones. “They are looking for a demilitarised zone or a free economic zone, meaning a format that could satisfy both sides,” he said on Tuesday, referring to US negotiators.

What are the proposed DMZs in Ukraine?

Russia has demanded full control of the Donetsk and Luhansk regions, which constitute the Donbas, historically Ukraine’s industrial belt.

Its troops currently control almost all of Luhansk and 70 percent of Donetsk.

The latest proposal would involve Ukrainian soldiers pulling out of the territory in the Donbas that they control – as long as Russia does not seek to occupy the region. Instead, that region is to become a DMZ.

Meanwhile, in Zaporizhzhia, Russian troops are in control of a nuclear plant that Ukraine has tried – so far in vain – to get back.

The latest proposal suggests turning the region around the nuclear plant into a DMZ, too.

But it is unclear how the proposed DMZs – if both sides were to agree to them – would be governed, who might ensure that both sides play by the rules and how resources there, such as the nuclear plant, could be shared.

“It’s a point in the plan that is supposed to satisfy both sides,” Marina Miron, an analyst at King’s College London, told Al Jazeera.

“However, I don’t see how this is going to function because in Ukraine Zelenskyy said that Russia would have to withdraw its forces, and we’re talking about the Donbas, and I don’t see that happening, especially if Russia is winning on the battlefield.”

Miron explained that Ukraine designating demilitarised zones in this peace plan was a tactic by Kyiv to signal that it was ready for peace, thereby pushing “the diplomatic burden on Russia”.

Has Russia responded?

Moscow has not accepted or rejected the latest peace plan so far.

Kremlin spokesman Dmitry Peskov told reporters on Wednesday that Russia was “formulating its position” on the plan. He did not comment on the specifics of the plan.

What are other demilitarised zones in the world?

Several DMZs exist. They include:

Korean Demilitarized Zone

The Korean DMZ is a 4km-wide (2.5-mile-wide) buffer zone separating North Korea and South Korea.

It was established in 1953 after the signing of an armistice ended the fighting of the Korean War.

The war had broken out in June 1950 when North Korean forces crossed the 38th parallel and invaded South Korea in an attempt to reunify the peninsula.

Korea was temporarily divided at the 38th parallel by the US and the Soviet Union after World War II. This division placed Kim Il Sung’s Soviet-backed Workers’ Party of Korea in control of the North and the US-supported Syngman Rhee government in control in the South.

The conflict lasted three years with Soviet- and Chinese-backed North Korean troops fighting against US-led United Nations forces. It killed an estimated two million people and devastated cities and villages on both sides.

The war concluded with an armistice signed by the US, China and North Korea, but South Korea refused to agree, and no formal peace treaty was ever concluded. More than 70 years later, the two Koreas remain technically at war.

UN Disengagement Observer Force Zone in the Golan Heights

The UN established a narrow strip of land as a DMZ in the Golan Heights in 1974 after the war that year between Israel and Syria and an armistice signed by the two countries.

The broader Golan Heights is a rocky patch of land that under international law belongs to Syria. Israel captured it during the 1967 Six-Day War and annexed it in 1982 in a move recognised only by the US.

The Observer Force Zone separates Israeli-occupied territory from the remaining part of the Golan Heights that is still under Syria’s control. The zone is still monitored by UN peacekeepers.

Sinai Peninsula demilitarised zones

DMZs were established in the Sinai Peninsula as part of the 1979 Egypt-Israel peace treaty. The treaty divided the Sinai Peninsula into four security zones with different military restrictions.

These zones are monitored by an international peacekeeping force called the Multinational Force and Observers.

Aland Islands

The Aland Islands are a small archipelago in the Baltic Sea between Sweden and Finland. They are an autonomous, Swedish-speaking region of Finland.

They have been demilitarised since 1921 as per a decision by the now nonexistent League of Nations. Finland and Sweden took the issue to the league because in the early 20th century, the islands were part of Finland, which gained independence from the Russian Empire in 1917.

After this, many Alanders wanted to reunite with Sweden, which spurred tensions.

Antarctica

Antarctica has been established as a demilitarised zone under the 1959 Antarctic Treaty.

This forbids military activity and nuclear testing, ensuring the continent is used exclusively for peaceful purposes and scientific research.

This is because several nations had made overlapping territorial claims in Antarctica, raising fears of future conflicts.

Preah Vihear Temple

The Thailand-Cambodia border, shaped by French colonial-era delineation, contains ambiguous boundaries and overlapping claims.

These disputes have grown more contentious as both countries strengthened their institutions and the strategic value of certain areas increased.

One of the contested zones is the culturally significant Preah Vihear Temple from the Khmer Empire, which is symbolically important to both nations. In 1962, the International Court of Justice (ICJ) ruled that the temple belonged to Cambodia.

Disputes erupted from 2008 to 2011, marked by exchanges of artillery fire, mass displacements and duelling legal interpretations of the ICJ ruling.

In 2011, the ICJ ordered a provisional demilitarised zone around the temple.

Have DMZs worked before?

DMZs have been considerably successful in some cases, such as in the case of the Koreas.

The zone between North and South Korea has prevented the two from large-scale military conflict.

On the other hand, violence has broken out between Thailand and Cambodia this year over their border dispute, killing nearly 100 people in July and December and displacing about a million, according to official counts. The two countries reported new clashes on Wednesday.

In other cases, such as in the Golan Heights or Sinai Peninsula, demilitarised zones have prevented direct, large-scale clashes.

However, Israel has repeatedly violated the Golan Heights buffer zone, especially over the past year, using the chaos after the ouster of former President Bashar al-Assad in December 2024 to grab territory and expel Syrian families. The UN has criticised Israel’s DMZ violations.