War for oil?

An unscheduled visit to Iraq by Joe Biden, who is apparently running for president next year, resulted in a conversation concerning the eradication of Islamic State. ISIS was formed in the wake of the u.s. led invasions of 1991 and beyond.
There has been speculation that the purpose of the visit masks other criteria. This due to a report that the former vice president has personal interests in the Ukraine company, Burisma which sells Iraqi oil. The link between the Bidens and Burisma is thought to be the subject of a so called controversial conversation between President Donald Trump and the Ukraine president Volodymyr Zelensky.
In the wake of public disapproval concerning western exploitation of global oil resources, this might be a good time for the u.s. to put a stop to politicians benefiting from war.