President Donald Trump said Thursday he’s “very close” to deciding whether he will approve a plan for more troops in Afghanistan.

“We’re getting close. We’re getting very close,” Trump told reporters at his golf club in Bedminster, New Jersey, according to a pool report. “It’s a very big decision for me.”

POLITICO reported earlier Thursday that U.S. and Afghan military commanders have run into an unexpected roadblock, as Trump’s indecision has lingered for months.

Military leaders were caught off guard when the commander in chief questioned whether the 16-year effort to stabilize Afghanistan is still worth it, rather than immediately approving their plan to increase troop levels.

“I took over a mess,” Trump said Thursday, “and we’re going to make it a lot less messy.”

The president is also mulling replacing the top U.S. commander in the region or allowing private contractors to take over the everyday task of advising the fading Afghan security forces, according to media reports.