Iran says it plans new Gulf 'exclusion zone', threatens US with new missiles

By Enas Alashray CAIRO, Sept 8 (Reuters) - Iran threatened the United States with "economic warfare" on Tuesday and said it had fired an advanced missile at U.S. warships, underscoring the risks of further escalation in the war only days after both sides traded blows again. The six-month-old war has been marked by a cycle of pauses followed by periodic flare-ups, with the U.S. last reporting attacks on Iranian targets on Saturday, when U.S. forces struck three Iranian oil tankers. Iranian state media on Sunday reported that Iran fired the Qassem Basir missile.