SYDNEY — Australian shares traded essentially flat Monday afternoon, with the benchmark S&P/ASX 200 index sitting at 9,006.0, up just 0.1 points, as energy stocks offset broader caution tied to a renewed weekend escalation between the United States and Iran and persistent expectations of further Reserve Bank interest rate tightening.

The muted session followed a soft finish on Wall Street Friday, when strong U.S. jobs figures further ratcheted up expectations for additional Federal Reserve rate hikes, with key inflation data still to come later in the week. U.S. stock markets were closed Monday for the Labor Day holiday, leaving international exchanges, including the ASX, to absorb weekend developments in the Middle East without guidance from American markets.

Capital.com senior market analyst Kyle Rodda pointed directly to the latest flare-up in the ongoing conflict as a key factor weighing on investor sentiment heading into the new week.

"The US and Iran exchanged fire over the weekend, with both targeting tankers as the battle for control over the Strait of Hormuz continues," Rodda said.

The renewed hostilities followed news that the United States struck three Iranian oil tankers over the weekend, in what American officials described as retaliation after U.S. warships were targeted with ballistic missiles. The exchange added to more than six months of sustained conflict centered on the strategically vital Strait of Hormuz, through which a significant share of the world's seaborne oil trade normally........

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