• AUD/USD hugs 0.7150 option expiry after third consecutive RBA rate hike

• 0.7136-0.7173 is Tuesday range-to-date (0.7136 is the lowest level since April 30)

• Safe-haven USD supported by Iran war fears: US-Iran wrestle for control of Gulf waters

• AUD/USD bids expected near 0.7100 (0.7110 was April 30 low; 0.7102 was April 29 low)

• 0.7200 and 0.7228 (four-year high on May 1-4) are resistance levels beyond 0.7173

• CFTC data: net AUD long rose 10% to 4-week high of 71,869 contracts in week to April 28

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(Robert Howard is a Reuters market analyst. The views expressed are his own)