Poland and Ukraine on Sunday denounced Russian strikes close to the Polish border, including on a Warsaw-bound train and near a frontier checkpoint – as an "escalation" in the war. Ukraine's rail operator said former British prime minister Boris Johnson and ex-US CIA director David Petraeus were at a border train station nearby around the time the train was hit. But the strikes came as US President Donald Trump called on Ukraine's President Volodymyr Zelensky to halt attacks on Russian refineries, saying it was causing a shortage of diesel fuel and "there are plenty of other targets". Ukraine has increasingly targeted Russian oil refineries in a bid to hurt Russia's war effort. Russia attacked western Ukraine with drones Sunday, just days after US envoys visited Kyiv and Moscow in a bid to revive talks to end Europe's worst conflict since World War II. European nations are meanwhile worried by what they say is increased Russian-orchestrated sabotage acts on their soil.

BRICS leaders voice concern over Middle East tensions

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