The hard-right Reform UK party unveiled plans on Monday for, if it wins power, “the largest military operation” in the Channel “since World War II” to stop migrants crossing on small boats. The proposal – which experts and other political parties promptly rubbished – comes days after tens of thousands of migrants entered Spain’s North African enclave of Ceuta from neighbouring Morocco, reigniting Europe’s debate over irregular migration. “What happened in Ceuta over the weekend shows you just...