Lingering uncertainty about U.S. policy weighed on the dollar, helping lift gold prices to a record high above $4,950 an ounce.

Oil edged up as U.S. President Trump's comments about U.S. naval movements toward Iran reignited concerns over potential conflict escalation and supply disruptions in global markets.

China's Shanghai Composite index rose 0.33 percent to 4,136.16 after consumer electronics giant Xiaomi announced a stock buyback program worth up to HK$2.5 billion ($321 million).

Hong Kong's Hang Seng index gained 0.45 percent to close at 26,749.51, extending gains for a third consecutive session following Trump's announcement of a framework deal with NATO on a future Greenland deal.

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