The United States' diplomatic efforts to mitigate Iran's potential retaliation for the assassination of Hamas leader Ismail Haniyeh,  appear to be making headway, White House officials told The Washington Post.

While the threat of a significant regional conflict remains high, White House officials expressed optimism on Tuesday that President Biden's strategies might be yielding results.

The situation is further complicated by uncertainties surrounding the details of Haniyeh’s death. Initially, Tehran claimed he was killed by an Israeli missile, suggesting a need for a similar retaliatory strike. However, officials now indicate that Iran has privately determined he was killed by a concealed bomb, which might influence their response differently.

Iran's potential retaliation may also be tempered by the recent U.S. display of military strength in the region and discreet communications from the White House through the Swiss embassy in Tehran and the Iranian mission at the United Nations.

“Iran understands clearly that the United States is unwavering in its defense of our interests, our partners, and our people. We have moved a significant amount of military assets to the region to underscore that principle,” a senior administration official stated.

Nonetheless, Hezbollah, Iran’s ally in Lebanon, remains a "wild car", officials noted.