U.S. President Donald Trump's abrupt decision to abandon his threat to wipe out Iran's civilization has exposed the limits of his unpredictable negotiating style, which critics have labelled as "TACO" or "Trump always chickens out". The president's decision to accept a two-week ceasefire with Iran, seen as a significant step towards de-escalating a 40-day-old war that has shaken the Middle East and disrupted global energy markets. However, critics have questioned the effectiveness of Trump's aggressive tactics and potential risks of underestimating Iran's potential for war. The White House denied that Trump had backed down, stating that his words were part of his "tough negotiating style". The change of tack on Iran follows a rise in U.S gasoline prices and slumping approval ratings.