A new round of US-brokered talks between Russia and Ukraine planned for this week has been postponed because of war in the Middle East, according to Ukrainian President Volodymyr Zelenskyy.

Meanwhile, the United States and its allies in the Middle East are seeking Kyiv's expertise in countering Iran's Shahed drones. Russia has fired tens of thousands of Shaheds at Ukraine since it invaded its neighbour just over four years ago, Zelenskyy said. Iran has responded with the same type of drones to joint US-Israeli strikes on Iranian targets.