President Donald Trump is back at war with Iran after the fragile ceasefire crumbled last week, but the commander in chief might have more leverage to prosecute the conflict this time.

On Monday, the Trump administration announced that U.S. forces would once again blockade the Strait of Hormuz in an effort to choke off Iran‘s energy industry and thereby its economy. This decision followed the Treasury Department’s recent reimplementation of sanctions on Tehran, not to mention wave after wave of escalating strikes against hundreds of Iranian military targets in the strait, along the Iranian coast, and even on Iran’s oil launch point of Kharg Island.