What impact could oil tanker attacks have on global economy?

Strait of Hormuz incidents underline threat hanging over busy
shipping lane


Attacks

targeting two oil tankers
in the strait of Hormuz on Thursday
followed strikes against four ships a month ago. The US has blamed
Iran for the action and the oil price has risen as a consequence.
Here we examine the potential impact on the global economy.

Source: FS – All-News2-Economy
What impact could oil tanker attacks have on global economy?