On March 13, the National Investigation Agency arrested six Ukrainians and one American citizen who allegedly crossed over to Myanmar from Mizoram. The incident has reignited conspiracy theories about the intentions of foreign powers in Myanmar and India’s Northeast.In India, it has revived speculation about a “Coupland Plan Redux” — an alleged attempt to carve out an independent state from India’s Northeast. The original Coupland Plan, proposed in the 1940s by British academic Sir Reginald Coupland, envisioned a Crown Colony comprising Assam’s tribal areas and hill regions as they existed then, with a warm-water port at Chittagong. Although the plan…