On the first day of every month, refugees in camps along the Thailand-Myanmar border would usually receive a top-up of credits to their digital food cards before making a beeline for food-card shops to stock up on groceries.On August 1, however, the shops stood quiet. Not a single queue formed outside.In Mae La camp – the largest of nine along the Thai border – Naw Wah Nay Paw, a worried storekeeper, stands among unsold bottles of cooking oil and cans of fish neatly arranged in rows. Most...