Ukrainian President Volodymyr Zelenskyy met with Nordic and Baltic leaders in Tallinn, Estonia on Tuesday, offering to share Ukraine's drone technology and expertise with regional partners amid ongoing concerns about Ukrainian drones straying into neighboring airspace.

The meeting comes after several incidents in recent months where Ukrainian drones have crashed into infrastructure in Estonia, hit fuel tanks in Latvia, and been shot down by Romanian fighter jets in Lithuania. Ukrainian officials have apologized for these incidents, attributing them to Russian electronic interference that knocked the drones off course from their intended military targets in Russia.

Zelenskyy and Estonian President Alar Karis agreed to explore cheaper methods for intercepting drones, as using NATO fighter jets for this purpose is expensive. Ukraine proposed offering low-cost interceptor drones and sending experts to train European partners, drawing on its experience assisting Middle Eastern countries with similar drone defense challenges. Zelenskyy indicated Ukraine could deploy experts to partner nations "at any moment."

During the summit, Ukraine and Latvia signed a drone cooperation agreement focused on joint defense and co-production. The talks also addressed Ukraine's European Union membership bid, with Zelenskyy stating that Kiev has met conditions to open accession negotiations and urging approval this summer. European Commission President Ursula von der Leyen said Ukraine is making "extraordinary progress" on required reforms.

The diplomatic meetings occurred against a backdrop of continued military activity, with Russia launching 166 long-range strike drones and two guided missiles at Ukraine overnight. Ukrainian air defenses intercepted 146 of the drones, while Russia reported downing 140 Ukrainian drones. The exchanges resulted in casualties on both sides, including three killed in Ukraine's Kharkiv region and one civilian death in Russia's Belgorod region.

Zelenskyy also pressed for stronger sanctions against Russia, including measures targeting its shadow fleet. The European Commission announced new proposed sanctions covering Russia's energy, financial and trade sectors, including a first-time ban on fisheries and restrictions on anyone who has served in Russian armed forces since the war began.