Ukraine is offering Estonia something no ally can buy off the shelf: how to fortify against Russia, learned under fire. Ukraine’s Defense Ministry announced, following a meeting between Defense Minister Yevhenii Khmara and his Estonian counterpart, Martin Herem, that Kyiv and Tallinn plan to develop joint defense projects, share data, and establish joint ventures.

Both sides agreed to strengthen their defense cooperation in a declaration signed in June, according to the President’s Office. The partnership is gaining momentum as German intelligence warns that Russia may be preparing military action against the Baltic states, Welt reported.

At the talks, the two sides went over the battlefield situation, Ukraine’s priority needs, and practical steps to deepen the partnership, the ministry said.

Ukraine’s war experience, packed for export

Ukraine’s experience of modern war was a central theme of the meeting, and it can already help Estonia strengthen its own defense against new threats, the ministry reports. During the visit, the Ukrainian delegation walked the Estonian representatives through its work on modern fortifications, including underground shelters.

“Ukraine is scaling up fortification solutions based on real war experience. We already know how to build defenses and adapt them to new threats. I am sure this expertise will be useful to Estonia,” Khmara said.

A debt of thanks to a steady backer

Khmara thanked Estonia for its consistent help, singling out its decision to give 0.25% of GDP each year to support Ukraine. He also noted Estonia’s leading role in the IT coalition, a group of states that helps build Ukraine’s military communications and cyber capabilities, as well as its active work with other partners.

The meeting was one of Herem’s first with Kyiv as defense minister. A former commander of Estonia’s armed forces, he took the post on 16 September after Hanno Pevkur resigned over a 70-million-euro procurement scandal involving artillery shells meant for Ukraine, Euronews reported.

The minister confirmed Ukraine is ready to deepen practical defense cooperation with Estonia and to work on joint solutions that strengthen the security of both countries.

Lithuania plans to deploy up to 100 soldiers to support border guards along its frontier with Russia's Kaliningrad Oblast, Defense Minister Robertas Kaunas said on 7 October.

Lithuanian Interior Minister Martynas Katelynas has described the deployment as a preventive measure linked to possible Russian mobilization and a recent incident on the Latvia-Belarus border, where masked, armed escorts tried to push a group of migrants into Latvia. Katelynas said Lithuania could face people trying to avoid mobilization and seeking asylum.

Kaunas said he had granted permission to use Lithuanian soldiers to strengthen border protection for the next several weeks.

 “The order starts being implemented immediately,” he wrote on Facebook.

Russia denies a new mobilization

The Kremlin denies a new mobilization is coming. In early September, Russian President Vladimir Putin called reports of one "complete nonsense" and "an information attack on Russia." Ukraine's military and foreign intelligence services say Russia's General Staff has prepared a scenario to mobilize 600,000 people over 2026 and 2027. On 28 September, President Volodymyr Zelenskyy said that "in effect, the Russians have already begun additional mobilization."

Frontier-station patrols for a couple of weeks, possibly longer

On 8 October, the Lithuanian army said soldiers were being brought in to help the State Border Guard Service from that day. A company-sized unit was planned for the assignment, initially for two weeks, with the option to extend. Soldiers will patrol with border guards in frontier-station areas, while mobile patrols, mobile observation posts, and military police crews may be added as needed. The army described the deployment as preventive and a normal form of interagency cooperation.

Kaunas had told LRT TV the soldiers would stay until 16 October. On the morning of 8 October, he said the deployment "was supposed to start" overnight and that he would check with the army. On 8 October, the Lithuanian army said soldiers were being brought in to help the State Border Guard Service from that day. Kaunas also said that “on the Kaliningrad side” there were no physical barriers, unlike the border with Belarus.

Lithuania says its border guards are stretched

On 8 October, Katelynas said the border guard service’s capacity was insufficient, with shifts growing while officer numbers were not increasing. He said the threat level had not changed. In a Facebook post the previous day, he said the situation at Lithuania’s border was calm and there was no reason to panic. He said Russia was planning mobilization after the elections and that Lithuania may face people trying to avoid it and seeking asylum.

Lithuania's State Border Guard Service had turned back 1,693 people trying to cross illegally from Belarus this year and about 26,300 since the migration crisis began, as reported by ELTA on 8 October. Katelynas said 43 migrants tried to enter southern Lithuania last week and were turned back.