WASHINGTON (AP) — More Americans sought unemployment benefits last week, but layoffs remain low despite economic uncertainty caused by the Iran war . The Labor Department reported Thursday that jobless claims were up to 215,000, up from 210,000 the week before. The four-week moving average of claims, which smooths out week-to-week volatility, rose by nearly 6,300 to 209,000. The number of Americans signing up for unemployment benefits — a proxy for layoffs — has stabilized in a low range of