Being closer to is not proof of intent. Personally there is much more evidence to distrust Trump and Netanyahu less than than the Iranians. I guess the West would not like Iran to have nuclear subs the equivalent of those of the US either:
* They have a high power density in a small volume and run either on low-enriched uranium (as do some French and Chinese submarines) or on highly enriched uranium (>20% U-235, current U.S. submarines use fuel enriched to at least 93%)[5] https://en.wikipedia.org/wiki/United_States_naval_reactors#Power_plants
Also:
In September 2017, Iran’s naval command said that the country’s nuclear agency was beginning to produce nuclear reactors for fueling and propulsion systems.16 However, many analysts assert that manufacturing a nuclear reactor for submarine use is beyond Iran’s current capabilities and is simply a response to increased U.S. sanctions after the U.S. withdrawal from the JPCOA.17