Valery Gerasimov said in remarks released by the defense ministry that Russian forces had taken control of 80 settlements and were pushing toward what he described as Ukraine’s “fortress belt” in the east.

The campaign is focused on the Donbas, where Russian troops are advancing toward a line of heavily defended cities, including Sloviansk, Kramatorsk and Kostiantynivka. Gerasimov said Russian forces were within 7 to 12 kilometres of Sloviansk and Kramatorsk and already engaged in fighting in parts of Kostiantynivka.

Russia is also conducting operations in the northern Sumy region and the northeastern Kharkiv region, aiming to establish what it calls a “security zone” along the border.Reuters could not independently verify the battlefield claims, and Ukraine’s military did not immediately comment.

Pro-Ukrainian mapping suggests a smaller territorial gain by Russian forces this year.Ukrainian commander Oleksandr Syrskyi said earlier this month that Kyiv’s troops had recaptured nearly 50 square kilometres in March, highlighting continued contested advances in what is Europe’s deadliest conflict since World War II.

According to Russian estimates, Moscow controls about 90% of Donbas and roughly 75% of the Zaporizhzhia region and Kherson region, along with smaller parts of other regions including Mykolaiv region and Dnipropetrovsk region.

Russia also retains control of Crimea, which it annexed in 2014, a move widely rejected internationally.The conflict, which began with Russia’s full-scale invasion in 2022, continues to see incremental territorial shifts, with both sides reporting gains amid heavy fighting.

The attack targeted a unit serving with the United Nations Interim Force in Lebanon as it was traveling to an outpost isolated by ongoing hostilities between Israeli forces and Hezbollah, according to UN officials.

In a statement, Security Council members denounced the assault “in the strongest terms” and reaffirmed their full support for UNIFIL operations in the region. The council did not assign responsibility, though France has blamed Hezbollah for the attack.

The incident occurred on Saturday amid heightened tensions along the Lebanon-Israel border, where clashes have intensified in recent weeks. UNIFIL peacekeepers are mandated to monitor hostilities and support stability in southern Lebanon.

French authorities have not released further operational details about the ambush, while the United Nations has called for accountability and the protection of peacekeeping personnel under international law.

The attack underscores growing risks faced by UN forces operating in volatile regions conflict zones, as diplomatic efforts continue to prevent further escalation in Lebanon.

In a written statement broadcast on Hezbollah’s Al-Manar television, Qassem said the group would not accept a return to prior arrangements and called on Lebanese officials to take a firmer stance in upcoming talks.

His remarks followed Israeli strikes earlier this week that he described as “bloody criminality,” referring to attacks on Wednesday that reportedly killed more than 300 people in Lebanon.

The comments come as Beirut and Tel Aviv are preparing to begin negotiations in the United States, part of ongoing diplomatic efforts to address escalating tensions between the two countries.

The semiofficial Fars news agency and Nour News said the strike targeted a residential area, though the intended objective remained unclear. Neither Israel nor the United States immediately claimed responsibility for the attack, which followed escalating threats from Washington over Iran’s closure of the Strait of Hormuz.

Separate airstrikes also hit Iran’s capital, Tehran, before dawn, with explosions reported across the city and the sound of fighter jets heard intermittently for hours. Iranian authorities did not immediately provide details on the targets or casualties from those strikes.

Iranian media said Sharif University of Technology in Tehran was among the sites hit, with damage reported to campus buildings and a nearby natural gas distribution facility. The university has previously faced international sanctions over alleged links to Iran’s ballistic missile program, though it was unclear what specific facilities were targeted.

In the city of Qom, south of the capital, an airstrike on a residential area killed at least five people, according to the state-run IRAN newspaper. Authorities did not specify the intended target of that strike.

Iran’s science minister said more than 30 universities across the country have been hit since the conflict began in late February, underscoring the widening scope of the bombardment. Iran has not released updated nationwide casualty figures in recent days.

The latest strikes come amid sustained attacks on military and infrastructure sites, with Iranian security forces reportedly using alternative locations as bases after repeated strikes on established facilities.

The conflict has also forced the closure of schools nationwide, with classes moved online, and disrupted key infrastructure, including energy distribution networks.