Israel’s defense establishment has raised its alert level in recent days amid concerns that President Donald J. Trump may have decided to carry out strikes against Iran, possibly within days. Security officials told Haaretz that the possibility of an imminent attack is being taken seriously, prompting preparations across both the home front and military forces for a range of scenarios.

Senior military officials said they view Trump’s decision-making as unpredictable, noting that even if he chooses to authorize an attack, he could still reverse course at the last moment. They added that coordination with U.S. counterparts remains close and that Israeli officials do not rule out a scenario in which the Israeli Air Force would strike targets in Iran in response to missile fire directed at Israel.