carl: helena humphrey can tell us more on that. welcome. u.s. rships are on their way to the region. this is clearly much more than an exchange of angry tweets, right? helena: right. that is certainly the concern. it is not the first time the u.s. p president has waged a war of words. it is fair to say that there is concern in the international community that this tactic could one day go too far. that was the warning from the british foreman -- foreign secretary, saying, let us not see these two countries trip into warfare. iran is bringing its own provocation. earlier today, it announced it has up its e enrichment of eithr -- uranium. it remains within the parameters of the 2015 nuclear deal. what we are seeing overall is trump's particular brand of foreign policy, flattery and then, battery, battery with that harsh rhetoric on those tweets. yesterday, remember, we saw the president appeared on fox news, saying i don't want to go to war with iran and wars hurt economies before adding, it also leads to loss of life. confused rhetoric, leading man