Washington DC. US President Donald Trump has said he would accept a 20-year ban on Iran's nuclear program. This statement appears to confirm that Trump has backed down from his previous demand that Iran's nuclear program must end completely. Trump has emphasized that this ban must be for 'a real 20 years'. Previously, he had stated that Iran must permanently stop uranium enrichment, considered a step in weapons manufacturing, and that it should never be allowed to acquire nuclear weapons. However, he also mentioned that his patience with Iran was wearing thin due to the lack of any positive signs in...