The Israeli intelligence community believes Iran has decided to attack Israel directly and may do so within days, Axios reporter Barak Ravid said on Sunday, citing two sources.
The attack would be in retaliation for the killing of Hamas leader Ismail Haniyeh in Tehran in late July, Ravid added.
Israel has not claimed or denied responsibility for the killing, which has fueled concern that the war between Israel and Hamas in the Gaza Strip was turning into a wider Middle East war.
Iran has vowed to "harshly punish" Israel over the assassination.