President Donald Trump’s rapid and dramatic turn from threatening to kill “an entire civilization” in Iran on the morning of April 7 to announcing a two-week ceasefire later that day left many observers with a sense of whiplash.

While it is difficult to predict whether the ceasefire between the U.S. and Iran will hold or how events will unfold, the dynamics of the conflict so far reveal multiple vulnerabilities in the short term and numerous detrimental effects on the region in the medium to long term.

Already, the truce has shown signs of strain. Iran and the U.S. almost immediately offered dueling narratives about the agreement, including whether it would cover the war in Lebanon. Iran and Pakistan, the primary mediator, asserted that it would, while the U.S. and Israel, which pledged to honor the U.S. agreement, said it would not. Indeed, a day after the ceasefire came into force, Israel conducted some of its most intense bombing in Lebanon to date.

As an expert in Middle East politics, I believe that the involvement of so many governments and militant groups – in both the negotiation process and in terms of the regional effects of the conflict – make it more difficult to uphold a ceasefire.

Over the past decade, there has been a shift in regional alliances in the Middle East, leading to increasingly assertive foreign policies by many countries and a deepening rivalry between Iran and Saudi Arabia. The current war only fuels these dynamics, incentivizing competition and offering governments and militant groups new opportunities to exert leverage over opponents.

The current reality also underlines the idea that external intervention and privileging war over diplomacy has made conflict resolution ever more difficult in a region with a long history of imperial expansion, great power competition and bitter political divides.

One of the more remarkable aspects of the war in Iran that began........

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