There have been reports of a fresh US air strike in Iraq, after the strike that targeted and killed top Iranian military commander Qasem Soleimani in Baghdad on Friday.
The incident has increased tensions between Iran and the US, although President Donald Trump asserted that Soleimani was killed "to stop a war, not to start one".
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Trump said the leader of Iran's elite Quds Force was plotting "imminent and sinister attacks on American diplomats and military personnel".
Iran has vowed "severe" revenge to avenge his death.
The question is what form this retribution will take, says Daily Maverick associate editor and US foreign policy expert Brooks Spector.
What this means is that we're now caught on this ladder of escalation. Do the Iranians respond with cyber attacks? Do they respond, for the sake of argument, with a bomb attack on an American senior official somewhere or an attack on an embassy or a military base?— Brooks Spector, Associate editor - Daily Maverick
Spector also speculates about the worrying option of an attempt to shut down the Strait of Hormuz, an essential transport channel for the Gulf's oil exporters.
Listen to the full conversation on Weekend Breakfast with Refiloe Mpakanyane: