Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Analysts: Iran Likely to Delay Response to Assassination of Top Nuclear Scientist Jamie Dettmer Iranian President Hassan Rouhani has vowed to avenge the assassination of nuclear scientist Mohsen Fakhrizadeh -- a killing he and other Iranian leaders blame on Israel. But some diplomats and analysts say they don't expect Iran to retaliate quickly for the meticulously planned shooting Friday of the 59-year-old scientist, the second senior Iranian military figure to be assassinated this year. Iran will bide its time following the death of Fakhrizadeh, who was widely seen as the father of Iran's covert nuclear program, they suspect, fearing otherwise they might provoke a fierce military response from outgoing U.S. President Donald Trump.'¯ Iranian leaders will also likely be considering whether retaliation will complicate President-elect Joe Biden's plan to restart a diplomatic engagement with Iran.'¯ "It would be a huge miscalculation heading into a Biden administration," says Jonathan Schanzer of the Foundation for Defense of Democracies, a Washington-based research group. "If Iran were to carry out some kind of attack, or to engage in violent activities that were clearly attributed to the regime, it would, I think, represent a huge unforced error." That is if Tehran's "primary goal" is to get out from under the "maximum pressure" campaign being pursued against it by the Trump administration, Israel and U.S. allies in the Gulf, he adds. Biden has said he wants to revive the 2015 international deal, the Joint Comprehensive Plan of Action, negotiated by his former boss, President Barack Obama, that saw the Iranians curtail their nuclear program in return for sanctions relief. .