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Defence & Security1 Nov 2026 · about 6 min

Russian forces stepping up efforts to expand control in northern Kharkiv region, border guards say

The brief

Russian forces are currently trying to enlarge the area under their control in northern Kharkiv region. This means pushing into or securing additional territory, rather than simply holding existing positions. The effort matters because the Kharkiv border is seeing the most frequent enemy attacks and use of weapons and military equipment among the regions discussed. The strongest pressure is reported in the defensive sector associated with Ukraine’s Hart Brigade. Andrii Demchenko, a spokesperson for Ukraine’s State Border Guard Service, said Russian forces were making the most attempts there. Their method involves repeated attacks and the use of military equipment to test or overcome Ukrainian defenses. The effort is ongoing, not complete. Russian infantry groups are operating in parts of Kharkiv region, and all three border regions face shelling. The reported concentration in Kharkiv suggests it is the main current pressure point, while Russian activity in Sumy is lower and Chernihiv has not yet seen infantry deployments.

01

What are Russian forces currently trying to do in northern Ukraine’s Kharkiv region?

Russian forces are currently trying to enlarge the area under their control in northern Kharkiv region. This means pushing into or securing additional territory, rather than simply holding existing positions. The effort matters because the Kharkiv border is seeing the most frequent enemy attacks and use of weapons and military equipment among the regions discussed.

The strongest pressure is reported in the defensive sector associated with Ukraine’s Hart Brigade. Andrii Demchenko, a spokesperson for Ukraine’s State Border Guard Service, said Russian forces were making the most attempts there. Their method involves repeated attacks and the use of military equipment to test or overcome Ukrainian defenses.

The effort is ongoing, not complete. Russian infantry groups are operating in parts of Kharkiv region, and all three border regions face shelling. The reported concentration in Kharkiv suggests it is the main current pressure point, while Russian activity in Sumy is lower and Chernihiv has not yet seen infantry deployments.

02

What does it mean for an army to expand its area of control during a war?

An army expands its area of control when it moves beyond its current positions and establishes authority over additional ground. Control is more than briefly entering an area. Forces generally need to hold positions, protect routes, and prevent the opposing army from immediately restoring its previous line. The article uses this idea to describe Russian efforts in Kharkiv region.

For example, Russian forces are making repeated attacks in the defensive sector of Ukraine’s Hart Brigade. If such attacks succeeded, Russian units could occupy new positions and extend the territory they influence. Weapons, military equipment, and infantry groups can support that effort, while defenders try to block movement and retain their positions.

The article does not say that Russia has achieved a specific amount of new territory. It reports attempts to expand control, especially in Kharkiv region. That distinction matters: an attack or attempted advance is not the same as confirmed, lasting control of ground.

03

How do the reported Russian attacks compare among the Kharkiv, Sumy, and Chernihiv border regions?

The reported intensity differs sharply across the three border regions. Kharkiv region has the most attempts to attack and use weapons and military equipment. Sumy region experiences fewer attempts, although Russian forces more often target the Konotop and Shostka districts. Chernihiv region has the lowest reported ground-attack activity because sufficient forces have not yet been assembled.

The article gives a clear comparison rather than exact counts. Russian forces are trying hardest to expand control within the Hart Brigade’s defensive sector in Kharkiv. In Sumy, attacks occur more frequently in two named districts, but their number is significantly lower than in Kharkiv. In Chernihiv, troops had previously planned attacks but lack enough gathered forces.

This pattern shows different levels of immediate pressure, not separate outcomes. All three regions are suffering Russian shelling. Infantry groups are operating in Sumy and Kharkiv, while they are not being deployed in Chernihiv, according to the report.

04

Where are Russian infantry groups operating, and where are they not being deployed?

Russian infantry groups are currently operating in parts of Ukraine’s Sumy and Kharkiv regions. Infantry means soldiers who move and fight on the ground, so their presence indicates activity involving personnel near or across contested areas. The article identifies these deployments but does not give their size or exact locations.

The contrast is Chernihiv region, where Russian infantry groups are not being deployed. Russian troops had previously planned attacks there, but Andrii Demchenko said they had not amassed sufficient forces to do so. This makes the absence of infantry deployment an important difference between Chernihiv and the other two regions.

The situation remains dangerous across the border areas. Russian shelling affects all three regions, even though infantry deployments are reported only in Sumy and Kharkiv. Therefore, the lack of infantry in Chernihiv does not mean the region is free from military pressure; it means the article reports no current infantry deployment there.

05

What is a defensive sector, such as the one associated with Ukraine’s Hart Brigade?

A defensive sector is an assigned area of the front that a military formation must protect. Commanders organize troops, weapons, observation, and responses around that area. The purpose is to make responsibility clear and coordinate resistance if opposing forces attack. In the article, the Hart Brigade is associated with a defensive sector in Kharkiv region.

Russian forces are making the most attempts to expand their area of control within that sector. This gives the term practical meaning: the sector is the part of the defensive line facing especially strong pressure. Ukrainian forces connected with the Hart Brigade are responsible for defending it, while Russian units seek to push into or influence more of it.

The article does not provide the sector’s boundaries, troop numbers, or exact defensive arrangements. It only identifies the sector as the place where Russian attempts to expand control are most frequent. Its importance therefore comes from the reported concentration of attacks, not from details about its layout.

06

What happens to civilians and infrastructure when border regions come under repeated shelling?

Repeated shelling puts civilians and essential services under continuing danger. Explosions can injure or kill people, damage homes and public buildings, and disrupt electricity, water, transport, and communications. Even when damage is not described, frequent attacks can make daily life unsafe and force people to seek shelter or leave. These are general consequences of shelling; the article does not give local casualty or damage figures.

The reported situation covers all three border regions: Kharkiv, Sumy, and Chernihiv. Andrii Demchenko said each is suffering from Russian shelling, even though ground activity differs. Kharkiv has the most attack attempts, Sumy has fewer, and Chernihiv lacks sufficient Russian forces for planned attacks.

The immediate reality is therefore broader than infantry movement. Chernihiv has no reported Russian infantry deployment, but its communities still face shelling. Continued attacks can deepen civilian hardship and infrastructure damage, yet the article provides no evidence about the scale of those consequences or what repairs have been required.

07

Why does an army need to assemble enough troops, weapons, and logistical support before launching and sustaining a ground attack?

An army must assemble sufficient troops, weapons, equipment, and logistical support before launching a sustained ground attack. Soldiers need coordinated units, firepower, ammunition, food, medical care, transport, and replacement supplies. Without these supports, an advance can lose momentum, become isolated, or fail to hold captured positions. This is why force buildup often precedes a major ground operation.

The article gives Chernihiv region as the concrete example. Russian troops had previously planned to launch attacks there, but Andrii Demchenko said they had not yet amassed sufficient forces. The mechanism is straightforward: planned action depends on having enough personnel and military resources concentrated in position to begin and continue the operation.

Chernihiv is therefore different from Kharkiv and Sumy. Russian infantry groups are operating in the latter two regions, but not in Chernihiv. The article does not predict whether or when an attack will occur. It only reports that the necessary buildup had not yet been completed.

This brief was written by AI from the original reporting and checked by other models. Names, figures and quotes come from the source; read it for full context.

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