Iraqi soldiers patrol the streets of Baghdad in a heightened state of security.

Some residents are voicing concern following an extremist insurgency by the Islamic State of Iraq and the Levant -- or ISIL -- in the north.

(SOUNDBITE) (Arabic) IRAQI CITIZEN, SAAD, SAYING:

"It is normal to be worried anywhere within Iraq because we, as Iraqis, consider Iraq a united country, whether north or south or the Kurdish region, so the troubles in any part of Iraq will raise concerns about our people. Definitely we are uncomfortable because the situation might collapse. "

There's also an increased troop presence in and around oil fields to help protect the country's energy industry.

But the head of a financial committee in Barsa province says the companies shouldn't be worried.

SOUNDBITE) (Arabic) HEAD OF FINANCIAL COMMITTEE AT THE BASRA PROVINCIAL COUNCIL, AHMED AL-SULAITEE, SAYING:

"The oil companies should not be concerned because any assault against th