Is scientific integrity threatened by US sanctions against Iran?

Scientific activities are not isolated from the societal activities. Economic crisis, wars, support grants, policy etc. can influence working conditions for scientists.
Recently, the US strengthened its trade restrictions with Iran, stemming from the US policy against “targeted foreign countries […], those engaged in activities related to the proliferation of weapons of mass destruction.” The restrictions recommend US publishers of scientific journals to avoid the publication of scientific papers submitted by Iranian scientists…