Despite a year of airstrikes against the Islamic State, the group is no weaker.

The Associated Press cited conclusions from the CIA, Defense Intelligence Agency and others that the situation with the Islamic State is at a stalemate. "We've seen no meaningful degradation in their numbers," an anonymous defense official told AP, adding that after spending billions of dollars and killing more than 10,000 extremist fighters, the group's likely strength of 20,000 to 30,000 people hasn't changed since last August when the U.S.-led airstrikes began.

It could take 10 years to push the Islamic State out of where it has planted itself, according to intelligence analysts; the group remains a well-funded army able to replenish itself as quickly as the U.S. can take it out.

In addition to Iraq and Syria, the group has also expanded to Libya, Egypt's Sinai Peninsula and Afghanistan.

There has been some success: a U.S. led coalition with Syrian and Kurdish allies on the ground has seized 9.4 percent of the Islamic State's territory in the first six months of 2015. The Islamic State is slowly losing its grip on Raqqa, Syria, as well.

"The pressure on Raqqa is significant, and it's an important thing to watch, but looking at the overall picture, ISIS is mostly in the same place," said Harleen Gambhir, a counterterrorism analyst at the Institute for the Study of War. "Overall, ISIS still retains the ability to plan and execute phased conventional military campaigns and terrorist attacks."

The Obama administration continues to say it will not send combat troops, only trainers and advisers to aid coalition partners.