The island chain 300 miles off the coast of Argentina has two names. The United Kingdom, which controls them as a protectorate, and the rest of the world call those islands the Falklands. Argentina calls them the Malvinas. Argentina has never owned the islands. Islanders are 90% British, descendants of the original settlers, and support their relationship with the UK. The UK has controlled the Falklands since 1830, and fought a war over them against Argentina in 1982 to keep them. But that didn’t stop President Barack Obama from attempting to use the Argentinian name for the islands. And...