The detention of the Doctors Kamiar and Arash Alaei may be part of a larger crackdown on Iranian human-rights activists and those with U.S. ties, according to an feature on NPR’s Morning Edition today.

In recent months, Iranian officials have interrogated a member of the National Academy of Sciences, denied visas to visiting foreign athletes and shuttered Nobel laureate Shirin Ebadi’s Human Rights Defenders office. Given these and other actions, it’s clear that the Alaei incident has little to do with the doctors’ alleged crimes. Instead, it is the result of a precarious political situation in Iran:

“In [the] Ahmadinejad administration, the pressure on all the dissidents and the opposition has intensified,” [said Ibrahim Yazdi, head of the Freedom Movement of Iran.] “Whenever the government feels weak inside, then it feels threatened by any move. Therefore, they cannot tolerate even a small gathering.”

NPR reports that the detention of the Alaeis is likely an extension of the larger human rights crackdown in Iran.

“The way that they are treating the Alaei brothers also shows that they are even either insecure, and they don’t feel comfortable with their activities, or that there is some personal clash against them,” [Yadzi said].

PHR and a coalition of concerned medical workers and organizations call for an end to the politically-motivated detention of the Alaeis. Only then will the doctors be able to continue their important work treating Iran’s people and advancing AIDS medicine worldwide.