LONDON, Aug 24 - U.S. Explainer-What are Iran’s options to escalate further in face of US economic threats? Key points and original sources are listed below.

• LONDON, Aug 24 - U.S. threats to impose "the toughest sanctions in history" to force Iran to buckle to its demands after nearly six months of war have raised the prospect of a new round of escalation in the Gulf.How could Iran respond to the economic pressure?...S1

• Explainer-What are Iran’s options to escalate further in face of US economic threats?S2