The European Union’s High Representative for Foreign Affairs and Security Policy, Kaja Kallas, issued a sharp diplomatic condemnation following Russia’s overnight deployment of an RS-26 Rubezh “Oreshnik“ medium-range ballistic missile against the city of Bila Tserkva, labeling the strike a dangerous act of nuclear brinkmanship. In a public statement broadcast on her official X (formerly Twitter) account on Sunday, May 24, the EU’s top diplomat argued that Moscow is leaning heavily on psychological terror tactics to compensate for its operational stagnation along the active frontlines.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. “Moscow reportedly using Oreshnik intermediate-range ballistic missiles – systems designed to carry nuclear warheads – is a political scare-tactic and reckless nuclear-brinkmanship,” Kallas emphasized. Kallas directly linked the use of the strategic ballistic system to a wider, systemic campaign aimed at urban infrastructure, characterizing the morning’s actions as heinous acts of terrorism specifically engineered to claim as many civilian lives as possible. To counter this latest vertical escalation, she confirmed that EU foreign ministers are shifting their institutional focus toward a coordinated response, scheduling an emergency review session for next week to hammer out concrete frameworks to heavily tighten international sanctions and amplify diplomatic leverage against the Russian Federation.