Following talks with the Pakistani government, Secretary of State John Kerry said the United States is making progress in the war on terror, and hopes to end the use of drone strikes "very soon."

The secretary of state told a Pakistani television station that President Barack Obama has a "very real timeline" for ending the strikes.

He did not provide specifics on the timeline.

"We hope it's going to be very, very soon," Kerry said Thursday, according to a transcript provided by the State Department.

"I believe that we're on a good track. I think the program will end as we have eliminated most of the threat and continue to eliminate it," Kerry said.

He added that the cessation depends on "a number of factors" and that Washington is working on it with the Pakistani government.

A State Department statement later addressed Kerry's remarks.

"Today, the secretary referenced the changes that we expect to take place in that program over the course of time, but there is no exact timeline to provide," the statement said.

However, it said, the goal is to get to a place where threats are eliminated and drones are not needed.

"Now, we're all realistic about the fact that there is a threat that remains and that we have to keep up ... the fight in this and other places around the world," Marie Harf, a State Department spokeswoman, said. "So this was in no way indicating a change in policy. It's really been reinforcing things I think we've said for months on this."

The United States ramped up strikes in the tribal region in the first few years of Obama's presidency. But the number of strikes in Pakistan has since dropped partly because of al Qaeda's decline in the country and more U.S. focus on threats from al Qaeda groups in other countries, such as Yemen.

In May, Obama defended the use of drone strikes as a necessary evil, but one that must be used with more temperance as the United States' security situation evolves.

America prefers to capture, interrogate and prosecute terrorists, but there are times when this isn't possible, Obama said in a speech at the National Defense University in Washington.

Terrorists intentionally hide in remote locations and putting boots on the ground is often out of the question, he said.

However, he urged caution and discipline.

"To say a military tactic is legal, or even effective, is not to say it is wise or moral in every instance," Obama said at the time. "For the same progress that gives us the technology to strike half a world away also demands the discipline to constrain that power -- or risk abusing it."

Increased oversight is important, but not easy, Obama said.

Drone strikes in the tribal regions bordering Afghanistan have drawn heated opposition in Pakistan because of civilian casualties.

The drone strikes have further roiled relations between the two nations, which flared following a 2011 raid by U.S. commandos on a compound in Abbottabad, Pakistan, that killed al Qaeda leader Osama bin Laden.

CNN's Adam Levine reported from Washington, and Faith Karimi wrote and reported from London. CNN's Melissa Gray contributed to this report