<prompt> Translate the following text to EnglishKatika taarifa yake, Mkataba huo ni mgumu zaidi kuliko kitu chochote katika historia ya udhibiti wa silaha duniani, kwamba kuuita hatua muhimu ya mageuzi mipaka ya understatement.  <response>: All told, the treaty is so much tougher than anything in the history of global arms control that to call it an important evolutionary step borders on understatement. 