The EU is preparing for retaliatory tariffs against the US if trade negotiations fail by August 1, potentially imposing €72 billion in countertariffs on US exports. Key sectors affected include aviation, machinery, and chemicals, with significant impacts on countries like Ireland, Germany, and Belgium. The tariffs could lead to increased prices and inflation in Europe, although the overall economic impact may be minimal according to some economists. The situation remains tense as both sides seek to avoid a trade war.