IEA: Slashed spending by drillers could lead to price spike 

HOUSTON (AP) — Oil prices will more than double by 2020 as current low prices lead drillers to cut investment in new production and gradually reduce the glut of crude, the head of a group of oil-importing countries said Monday.

Fatih Birol, executive director of the International Energy Agency, said oil would rise gradually to about $80 a barrel.

Oil prices shot to more than $100 a barrel in mid-2...