Mr. Trump, in an interview on NBC, said: “We’ve done very massive sanctions. We’re increasing the sanctions now.” Mr. Trump and his aides have indicated they are prepared to wait for the economic vise on Tehran to tighten further, but didn’t elaborate on what additional sanctions would look like. Given the extensive measures imposed so far, there are few options left. One possible channel for ratcheting up the pressure would be to penalize banks, insurers, traders or any other companies outside Iran that are still helping the country, a move that would stifle the remaining flows of cash keeping the country and regime on life support. Secretary of State Mike Pompeo seemed to suggest that approach on Sunday, saying the new measures “will be a further effort to ensure that [Iran’s] capacity not only to grow [its] economy, but to evade sanctions, becomes more and more difficult. It’ll be […]