Former CIA director and retired Army General David Petraeus called the deteriorating security situation in Afghanistan “disastrous” and “catastrophic” for not only the U.S. but the world, in a Friday interview. “This is an enormous national security set back and it is on the verge of getting much worse unless we decide to take really significant action,” Petraeus told Rita Cosby on “The Rita Cosby Show” on WABC Radio.The former commander of U.S. and International Forces in Afghanistan described the domino effect that occurred once the U.S. pulled the bulk of its remaining troops out of the nation.TALIBAN EXECUTIONS, BEHEADINGS IN AFGHANISTAN STRIKE FEAR AMONG THOSE STUCK INSIDE COUNTRYU.S. withdrawal prompted the swift removal of all NATO forces and contractors – some of whom maintained the Afghan air force.Petraeus said he was concerned “months ago” about a “psychological collapse” that would occur when Afghan forces realized they could not uphold the level of support they were accustomed to in fighting back the Taliban. “We are now in a situation where the Taliban are trying to encircle Kabul – a city of 5 of 6 million before hundreds of thousands of refugees starting flooding into it,” he added. “If we communicate effectively with the Taliban that they need to halt what they are doing or we will bring the might of the U.S. military down upon them, we can stop this.”In recent weeks the Taliban have made major advances by gaining control of 240 of the nation’s 421 districts. The insurgent group additionally gained power in the second and third largest cities of Kandahar and Heratt earlier this week – prompting greater concern for the safety of Kabul as Taliban forces advance on Afghanistan’s capital.MCCARTHY SLAMS BIDEN’S AFGHANISTAN WITHDRAWAL AS ‘EMBARRASSMENT TO OUR NATION’President Biden authorized a mass evacuation of thousands of American diplomatic personal and Afghan interpreters by sending in 4,000 additional troops to aid the 1,000 already positioned at the Kabul airport and embassy. “The outcome, whether it is the Taliban taking over the country or it’s the kind of civil war that we saw in the wake of the collapse of the post-Soviet government, there are no good outcomes here,” Petraeus said. “In fact there is nothing more than horrible outcomes unless we are willing to acknowledge that this is not going as more optimistic projections laid out and take stock.”The retired general said he doesn’t fear an immediate threat to the U.S. from what he believes will likely become an Al-Qaeda and Islamic State sanctuary. Instead, he pointed to the fallout from the collapse of Afghanistan as the real threat. GET THE FOX NEWS APP”Remember what happened when Syria melted down – we used to call it the geopolitical Chernobyl,” he added, reflecting on the violence, extremism and “tsunami of refugees” that affected not only neighboring nations but European allies. Petraeus said the situation is not passed the point of no return but argued it will require an “enormous amount of effort” now that regions that housed U.S. troops have been taken over by the Taliban.