WATCH: US jets prepare to fight Islamic State in Syria, Iraq

UN Syria envoy urges action plan in embattled country where extremist Islamists are taking ground.

US jets after receiving fuel over northern Iraq. (photo credit: REUTERS)
US jets after receiving fuel over northern Iraq.
(photo credit: REUTERS)
The US Navy released new video on Thursday showing air operations from aboard the Nimitz-class aircraft carrier USS Carl Vinson, aimed at fighting Islamic State in Syria and Iraq. The video was shot on Monday.
Sailors aboard the USS Carl Vinson conducted flight operations in the Gulf as part of what the US military calls "Operation Inherent Resolve."
US jets
The San Diego-based aircraft carrier, the USS Carl Vinson, took over air operations and relieved the USS George H.W. Bush, in the Gulf on October 19.
Meanwhile on Thursday, the UN said the humanitarian crisis in Syria is getting worse as all parties to the war, including forces aligned with the government and Islamic State militants, show "callous disregard" for millions of suffering civilians.
The Security Council heard comments from Kyung-wha Kang, UN assistant secretary-general and deputy emergency relief coordinator, during a monthly briefing for the Security Council on compliance with UN demands for greater aid access across Syria, now in its fourth year of civil war.
The UN Syria envoy Staffan de Mistura also briefed the Council following his 40-day-long tour in the region.
He proposed an "action plan" of implementing some "incremental freeze zones", local ceasefires where political process could be started at a local level. He mentioned the city of Aleppo, a place "of iconic value", as an obvious candidate.
"The idea is to take this horrific, horrible trigger that Daesh/ISIS has been producing in the region and in Syria as a trigger for actually moving forward on what could be some actions on the ground for those who agree that terrorism, which is Daesh is to be stopped," de Mistura told reporters at the UN, referring to Islamic State with their colloquially known name of Daesh.
Nearly 10 million people have been displaced by Syria's civil war, which started with pro-democracy protests but grew into an armed revolt when security forces cracked down on the demonstrations. More than 3 million refugees have fled the country, and the conflict has killed close to 200,000 people, according to the United Nations.
Both the Syrian government and insurgent groups are accused by rights organizations of killing civilians and destroying homes.
Islamic State has taken over large swaths of Syria and Iraq. It is accused of massive human rights violations, including beheadings and massacres.