The United States and Great Britain have pulled their last forces out of strife-torn Yemen, raising fears that the failed state will become even more of a breeding ground for terror groups plaguing the Middle East and the West.

Over the weekend, the United States evacuated the last of its special operations forces — including Navy SEALs and Army Delta Force troops — amid the deteriorating security situation in the country, the U.S. State Department said.

On Monday, a security source in the region familiar with the situation in Yemen told CNN’s Nic Robertson that British special forces had also left Yemen in the last few days. The British Ministry of Defence declined to comment. […]