Americans have little understanding of the dynamics surrounding Iran's nuclear policy ("Difficult diplomacy ahead regarding Iran," editorial, April 6). The most important fact is that Iran is signatory to the Nuclear Non-Proliferation Treaty (NPT) to which the United States and virtually every other country in the world is signatory (except Israel, Pakistan, India, North Korea and South Sudan). The NPT was finalized in 1970. It prohibits all non-nuclear weapons states at the time of the treaty, including Iran, from developing nuclear weapons. This is an actual binding treaty. It does allow signatories to develop nuclear energy for peaceful purposes, including uranium enrichment — something 19 non-nuclear weapons nations other than Iran do with no complaints from the United States or other nations.
The George W. Bush administration had a publicly announced policy advocating "regime change" in Iran, and it accused Iran of developing nuclear weapons as a way to convince Americans and other nations that Iran's government should be overthrown. This was a false accusation. The Bush administration imposed economic sanctions on Iran to try to force it to stop its legal uranium enrichment.
The Joint Comprehensive Plan of Action (JCPOA) was an international agreement, not a binding treaty, that aimed to "build confidence" that Iran was not violating the NPT by limiting its nuclear development, including Iranian uranium enrichment. The JCPOA reduced sanctions on Iran in return. Former President Donald Trump's withdrawal from the JCPOA and reimposition of sanctions on Iran triggered Iran resuming uranium enrichment, still legal under the NPT. Thus, Iran is still in full compliance with the NPT. It still is prohibited from developing nuclear weapons. Its leaders have repeatedly renounced the use of nuclear weapons.
Any other negotiations with Iran on missiles, regional political activity or human rights fall outside of both the NPT and the JCPOA, and must be negotiated separately.
William O. Beeman, San Jose, Calif.
POLLUTANTS
Other pesticides are risky, too
Karin Winegar's commentary detailing some state legislative initiatives being made to reduce the public, environmental and animal health risks of pesticides is most encouraging ("Minnesota is poised to lead environmental breakthrough," Opinion Exchange, April 7).
The use of flea-control insecticides on pets also needs closer examination, considering the recent discovery of some widely used anti-flea topical insecticides, especially fipronil and imidacloprid, in wastewater (from bathing pets) and in rivers and streams (from allowing treated dogs into the water) reported in the U.K. and the U.S. Both the British and American Veterinary Medical Associations (I am a member of both) have reported these concerns in their professional journals.
These insecticides are toxic to aquatic invertebrates and pollinators in parts-per-trillion concentrations, and toxic degradates have half-lives of up to several hundred days. The Environmental Protection Agency in the U.S. needs to take action. Dog owners and groomers bathing dogs and hunters allowing dogs to enter freshwater ecosystems should not do so if these animals have been given topical insecticides or are wearing repellent-insecticide-impregnated collars.
Michael W. Fox, Golden Valley
The writer is a veterinarian.