For months, French President Emmanuel Macron has used a stock reply to questions about why he has not visited Ukraine since the outbreak of war there. “I’ve always said the same thing,” he told reporters in northern France on Tuesday. “At a time and in circumstances that are useful, I’ll make the trip.” Having watched a succession of Western leaders visit Kyiv to greet President Volodymyr Zelensky in person since late February, Macron is now under growing pressure to follow suit to signal his support for the Ukrainian cause. During March and April, he pointed to his packed schedule during camp…