On Monday, Moscow announced a campaign of “systematic strikes” on Kyiv’s “decision-making centres” and urged foreign diplomats to leave, prompting a joint condemnation from nearly fifty nations at the UN. Ukraine’s permanent representative Andrii Melnyk, standing with European, Canadian, Japanese and Australian envoys, called the escalation “atrocious” and demanded an unconditional ceasefire. The United States, now acting as mediator, did not join the protest.

European governments swiftly rebuked Moscow. Berlin summoned Russia’s ambassador; Canberra delivered a formal dressing-down. The joint statement decried what it saw as threats to diplomatic missions, insisting all personnel would remain. Washington’s dual role—maintaining a channel to both Kyiv and the Kremlin—left it conspicuously silent, underscoring fissures in the transatlantic response.

Ukraine’s retaliation was swift. Overnight, explosions rocked the occupied Crimean cities of Sevastopol and Simferopol. Russian officials said air defences shot down more than twenty drones and intercepted Storm Shadow cruise missiles. Falling debris started a blaze at the Tuapse oil terminal on Russia’s Black Sea coast, demanding over eighty firefighters and 25 appliances. The strike extended Kyiv’s long-range campaign against energy assets, which has intensified as crude prices jump amid the Iran war.

The escalation has been matched by bellicose rhetoric. A senior Russian parliamentarian openly threatened Kyiv with weapons of mass destruction, while Moscow accused Ukraine of hitting the southern city of Taganrog. The Oreshnik missile, used in the weekend assault on the Ukrainian capital that killed four and injured nearly 100, is being studied by Western military analysts as a significant threat because of its hypersonic speed and manoeuvrability.

As both sides double down, the risk of accidental escalation grows. Analysts in London note that Moscow’s warnings to diplomats signal a willingness to expand its target list, potentially complicating the West’s ability to protect its missions. With peace efforts at an impasse, the war appears set for another grinding, high-casualty summer, with Ukraine’s western backers under increasing domestic pressure to sustain military aid. The diplomatic isolation of Russia at the UN remains stark but, for now, ineffective in altering the battlefield facts.