President Donald Trump suspects a connection. Iran’s history gives investigators reason to pursue it.

The passengers aboard Flydubai Flight FZ1073 survived an apparent attempt to turn their aircraft into a mass grave. Now investigators face another urgent question: Did the co-pilot accused of attacking his captain and attempting to crash the Israel-bound plane act independently, or was someone behind him?

President Donald Trump believes an Iranian connection may be emerging.

Asked Thursday whether the suspect was linked to Iran, Trump answered that information reaching him pointed toward yes, while emphasizing that the inquiry remained underway. He also warned of severe consequences if Iranian responsibility were established.

That deserves attention. The president receives classified briefings and diplomatic reporting unavailable to the public. His suggestion carries greater significance than an outside commentator’s guess. We do not know what information informed his remarks, however, and preliminary intelligence can change as investigators obtain evidence.

Trump has signaled suspicion, not announced a completed finding.

Israeli Prime Minister Benjamin Netanyahu has supplied another significant development: He says the suspect underwent radical Islamist indoctrination. Netanyahu has nevertheless withheld a final conclusion about Iranian involvement. Israeli investigators are joining the UAE-led inquiry, with questioning of the suspect expected following his transfer from Saudi Arabia.

These developments make the initial “lone wolf” description insufficient as an explanation.

One man may have carried out the cockpit assault. That does not establish that he developed his intentions without encouragement, consumed no terrorist propaganda or received no assistance. Operational solitude and ideological independence are different things.

A terrorist movement can encourage supporters to commit violence without issuing individual assignments. Propaganda that glorifies murder and urges followers to attack wherever they have access can produce perpetrators who never meet a handler. Whether that happened here remains unresolved.

Iran deserves scrutiny because its connections to overseas terrorism are documented.

In 1985, Hezbollah terrorists hijacked TWA Flight 847 and murdered American Navy diver Robert Stethem. A State Department historical summary identifies Iranian logistical support for that operation. Civilian aviation therefore has a precedent involving Iranian assistance.

In 2012, Hezbollah’s external operations organization bombed a bus carrying Israeli tourists near Bulgaria’s Burgas Airport, killing five Israelis and their Bulgarian driver. Hezbollah’s Iranian backing is established, although that relationship alone does not prove Tehran ordered every specific operation.

That same year, Thai authorities uncovered a bombing plot targeting Israeli diplomats involving Iranian suspects. The record provides ample reason to examine Iranian networks when Israelis abroad become targets.

The apparent attack aboard FZ1073 also raises questions about preparation. According to Israeli accounts, the co-pilot attacked the captain and attempted to bring down the aircraft. Investigators should determine whether he deliberately sought this flight assignment, prepared beforehand or communicated his intentions.

Yet preparation need not imply an elaborate organization. An operating pilot already possesses technical knowledge and cockpit access. His professional position supplied advantages that conventional hijackers must struggle to obtain.

That distinction sharpens the investigation: Was this an individually prepared attack, an inspired act of terrorism or a directed operation?

The target offers conceivable motives for outside sponsorship. An attack could kill Israelis, frighten travelers and damage confidence in the Israel–UAE relationship. Those consequences explain why investigators might examine Iranian involvement. They do not establish who intended them.

Nor does alleged Islamist radicalization identify its source. Investigators must trace actual contacts and influences rather than assume every extremist belongs to the same network.

The wounded captain, additional crew and passengers prevented a catastrophe. Their courage now gives authorities an opportunity to question a surviving suspect and reconstruct his preparations.

Trump’s warning tells any potential sponsor that failure would not erase responsibility. That is a defensible deterrent message. Accountability must follow the evidence wherever it leads.

Iran’s history makes the president’s suspicion credible enough to investigate seriously. His access to information gives his words additional weight. The decisive question is whether investigators can connect this attacker to Iranian assistance or direction.

Until then, Tehran belongs among the possibilities under examination. Calling the suspect a lone wolf cannot close that inquiry.

(Contributing writer, Brooke Bell)