The leaders of Malaysia and Thailand said on Thursday they would work on developing a special border economic zone, and had resolved an issue that had disrupted trade in seafood between the neighbours. In May, Thailand restricted the import of Malaysian-caught sea bass due to concerns over chemical residues, prompting Kuala Lumpur to temporarily ban some varieties of Thai shrimp over food safety controls last month. “We have resolved this outstanding issue of fisheries … we agree it should...