Forex-Dollar wavers amid renewed Iran attacks, yen slides on pensions doubts

The dollar slipped on Monday after giving up earlier gains as investors focused on renewed hostilities in the Gulf, while the yen slid following a Reuters report that Japan had no immediate plan to change state pension funds' asset allocations.

The U.S. currency rose earlier in the session along with oil prices but later lost ground, with the euro up 0.15% at $1.143. Sterling slipped very slightly to $1.339, while the Australian dollar was flat at $0.695.

U.S. and Iranian forces exchanged heavy missile and drone assaults at the weekend, with Tehran targeting U.S. facilities in states across the Gulf on Sunday and saying it had again closed the vital Strait of Hormuz shipping route.

Oil prices rose, with Brent crude futures up 3.5% at $78.65 a barrel.

The dollar index, which tracks the currency against six peers, was last down 0.15% at 100.9.