Japan's Nikkei retreats from 4-month high as US-Iran tensions weigh

The Nikkei 225 Index closed 1% lower, snapping a three-day winning streak.

There were 62 advancers in the Nikkei index against 159 decliners. The largest percentage losses in the index were Trend Micro, down 8.4%, followed by Screen Holdings which skidded 4%.

Nippon Steel was among the top gainers, rising 2.3%