“And also, not coincidentally,” Mr. Netanyahu added, showing a picture that appeared to be Mr. Fakhrizadeh — there are only a handful of images of him that have been published — “many of S.P.N.D.’s key personnel worked under Fakhrizadeh on Project Amad.”
The assassination took place amid new tensions between Trump and Iran.
The assassination comes at a time of heightened tensions between Iran and the Trump administration. Mr. Trump was dissuaded from striking Iran just two weeks ago, after his aides warned it could escalate into a broader conflict during his last weeks in office.
Mr. Trump had asked senior advisers in an Oval Office meeting on Nov. 12 whether he had options to take action against Iran’s main nuclear site at Natanz in the coming weeks. Days later, Mike Pompeo, the secretary of state and former C.I.A. director, visited Israel on what will likely be his last trip there in office.
Attacking Iran to force it to stop expanding its nuclear program would be a significant blow to Mr. Biden, who wants to revive the 2015 Iran nuclear accord. Such a strike on the eve of a new administration could poison relations with Tehran to such an extent that negotiating a restoration of the deal, or toughening its terms, could be impossible.
Since Mr. Trump dismissed the secretary of defense, Mark T. Esper, and other top Pentagon aides last week, Defense Department and other national security officials have privately expressed worries that the president might initiate operations, whether overt or secret, against Iran or other adversaries at the end of his term. Others have speculated that Mr. Netanyahu, who at various moments has been on the edge of attacking Iran’s nuclear facilities, might seek to act while Mr. Trump is still in office.
While Mr. Trump’s top advisers — including Mr. Pompeo and Gen. Mark A. Milley, the chairman of the Joint Chiefs of Staff — argued against a military strike against Iran, top American officials and commanders still warn of Iran’s malign activities.
“For decades, the Iranian regime has funded and supported terrorism and terrorist organizations,” Gen. Kenneth F. McKenzie Jr., the head of the military’s Central Command, said last week on a webinar about the Middle East.