navies police had to make sure it stays open. that has not been a problem. the last time this was a problem was in the late 1980's. both iraq and iranere starting shipping through the strait. host: 15.5 million barrels per day passed through the strait of hormuz. the first call is from massachusetts, independent, good morning. caller: i understand and i think we are on the mat estimating -- we are underestimating that if iran makes any serious move to block the strait of hormuz that it will be a perilous move for them. i don't think they would actually do it. i think this is a lot of posturing. i have many iranian friends and they're very upset pat nobody ever talks about 1953 when the u.s. and the cia had a role in overthrowing the government and instituted the shah which led to the revolution in 1979. with respect to the u.s. role in that region, notoriously supporting dictators and intervening with regard to the strait of hormuz in international waters but actually getting involved in politics bear really inflames people. i think this is part of the blow but foreign policy that many presidential candidates are talking about that