What did many nations fear would happen if iraq occupied kuwait?

Saddam hussein would eventually invade saudi Arabia

The thing that many nation fear would happen if Iraq occupied Kuwait was: Sadam Hussain Will invade Uni emirates Arab.

A lot of countries in the world heavily depended on UEA for their oil supply. If UEA fall to the hands of Sadam Hussain, the condition will become a serious threat for them.