istanbul iranian president hassan rouhani say wednesday muslim nations work together defend right palestinians follow donald trump decision last week recognize jerusalem israel capital rouhani attend emergency meet muslim leaders say u.s. president move show unite state lack respect legitimate right palestinian nation iran ready cooperate muslim countries without precondition defend legitimate right palestinians rouhani tell gather turkish city istanbul unity among muslim countries important quds jerusalem become top priority opposition israel support palestinian cause central iran foreign policy since islamic revolution 1979 topple u.s.-backed shah iran lead shi ite muslim power sunni muslim saudi arabia compete influence middle east support rival group yemen syria iraq lebanon tehran riyadh see paramount threat regional peace stability saudi arabia cut diplomatic relations iran 2016 iranian protesters attack saudi diplomatic missions tehran city mashhad follow riyadh execution prominent shi ite cleric rouhani say muslim countries resolve dispute dialogue also accuse israel plant seed tension across middle east twitter account rouhani say trump move recognize jerusalem israel capital show washington honest mediator never add want secure interest zionists iran recognize israel regard palestine comprise holy land include israeli territory iranian leaders repeatedly call destruction israel tehran back several militant islamist group fight israel iran urge muslim nations defend palestinians trump move