TOKYO - Japan's economy expanded an annualized real 1.8 percent in the January-March quarter, revised down from an initially reported increase of 2.1 percent as capital investment slowed, government data showed Monday.

It marked the second consecutive quarter of growth, but many economists believe the prolonged Iran war will likely weigh on the Japanese economy in the April-June quarter by fueling inflation, weakening private spending and disrupting supplies of petroleum products.

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