The Commander of US Central Command, Admiral Brad Cooper, has prepared a plan for a large-scale air campaign against Iran that could last up to two weeks, The Wall Street Journal (WSJ) reports, citing sources. US President Donald Trump has not yet decided on further military action against the Islamic Republic, according to the sources. Trump could also opt for limited strikes in the hope of preserving a path to a diplomatic settlement. Caine is concerned about the depletion of US interceptor missile stocks. Trump previously said the United States intended to continue striking the Islamic Republic.