If the Pope gets attacked in Iraq, will Biden use it as an excuse to start a war?

A resurgence in violent attacks has again forced the Vatican to address whether the pope's visit is safe. Iran-backed militias have twice since the beginning of the year sent rockets into bases housing American and coalition forces. President Joe Biden ordered a retaliatory strike against a suspected insurgent bases in Syria after the first attack.
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And he's talked about dying recently. Maybe he wants to go out as a martyr and be made a saint:
Pope Francis expects to die “as pope, either in office or emeritus.” He revealed this in an interview with renowned Argentinian journalist and doctor, Nelson Castro
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