Russia's foreign ministry escalated its rhetoric against Britain on Tuesday, warning that London risks being treated as a direct participant in the war in Ukraine after reports that British-made drones were used for the first time in long-range strikes deep inside Russian territory.

Foreign Minister Sergei Lavrov said Russia has "every right to regard the openly proclaimed direct involvement of British missile forces in strikes against the Russian Federation as participation in the war," adding that such involvement would come "with all the consequences that entail," according to Global Banking and Finance.

The trigger was a report in The Times of London that British-made drones had struck targets deep inside Russia, marking an apparent widening of the scope of UK military support for Ukraine beyond earlier assistance. Lavrov didn't stop at the warning: "I feel sorry for Britain if it intends to stand with Ukraine to the bitter end," he said, according to a Reuters report carried by the Tribune India. Russia's embassy in London went further, warning that Westminster would "pay" for backing Ukrainian strikes.

"WE ARE PROVIDING SUPPORT SO THAT UKRAINE CAN DEFEND ITSELF."

The warning lands squarely on new UK Prime Minister Andy Burnham, who took office in July and is now facing his first major foreign-policy confrontation with Moscow. Burnham didn't back down, saying Britain would support Ukraine "100 per cent" and stand by Kyiv "in its hour of need," framing the drone strikes as "the UK doing what it has long said it would do... against this illegal war led by Vladimir Putin," per Global Banking and Finance. He added simply: "We are providing support so that Ukraine can defend itself."

Not the first accusation, but a sharper one

Moscow has previously accused British military specialists of direct involvement in strikes on Russian soil, but Tuesday's comments from Lavrov himself mark a more pointed escalation, explicitly floating the idea that the UK could be legally recast as "a party" to the conflict — language that carries weight given Britain's status as a NATO member and nuclear power.

The exchange came against a backdrop of intensifying fighting on multiple fronts. In the same reporting cycle, Ukrainian forces struck an oil facility near Estonia's border and hit Russia's Progress rocket and space center, while Russian missiles killed at least 10 people in Ukraine's Kharkiv region, according to Reuters' wire reporting.

British officials have not detailed which specific drone systems or capabilities were used in the reported strikes, and the UK Ministry of Defence has not issued a formal public response beyond Burnham's remarks. Kremlin officials have not specified what "consequences" they envision if the UK is formally deemed a war participant, but the language echoes past Russian threats aimed at other NATO states over weapons transfers to Kyiv.

For now, both sides appear to be talking past each other — Moscow casting British assistance as active military participation, and London framing it as continuity of a policy it has "long said it would" pursue. Diplomats in both capitals say they don't expect the rhetoric to immediately change facts on the ground, but the exchange adds a new flashpoint to an already tense summer between Britain and Russia.