Ukrainian President Volodymyr Zelensky said on Monday his country’s assault on Russia’s Kursk region showed that Kremlin threats of retaliation were a bluff, and he urged Kyiv’s allies to loosen curbs on using foreign-supplied weapons. Zelensky said Ukrainian forces now controlled more than 1,250 square kilometres (483 square miles) and 92 settlements in Kursk region, while Russia said Ukraine had struck a third bridge in the region, complicating Russian efforts to repel the Ukrainian attack. Ukraine launched its surprise strike on the Russian region on 6 August, the biggest invasion of Russia…