U.S. officials are reportedly preparing for a review of U.S. military strategy in Afghanistan after the Trump administration failed to see major progress against the Taliban in 2017.

Several U.S. officials told Reuters that the White House has not yet formally ordered the review, but that it was planned to be possibly announced within the next few months.

“We’ve received some indications from the White House that Trump could ask for a review in the next few months. So we’re preparing for what it would look like,” an unidentified senior U.S. official told Reuters.

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Another senior official confirmed that the president had repeatedly voiced concerns over a lack of military progress against the Taliban in the country, where U.S. forces are hoping to box militants into peace talks with the Afghan government.

President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's concerns also reportedly stem from the 17-year-long war's massive cost, which has topped more than $1 trillion.

“The president has asked repeatedly what progress we’ve made in Afghanistan since he made his decision, and how much we’ve invested there since 2001,” said the senior official.

“He’s voiced his frustration about the lack of progress many, many times, basically asking ‘What have we got for all that money?’ ”

In a visit to the country on Monday, Secretary of State Mike Pompeo Michael (Mike) Richard PompeoTreasury sanctions individuals, groups tied to Russian malign influence activities Navalny released from hospital after suspected poisoning Overnight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers MORE defended the current U.S. strategy and pledged the administration's continued support for the Afghan government.

"The president’s strategy is indeed working. Our South Asia strategy has sent a clear message to the Afghan peoples and its security services that we will support them as they continue to fight to defend their country and their people," Pompeo said.

"The strategy has sent a clear message too to the Taliban – they cannot wait us out – and we are beginning to see the results both on the battlefield where the Taliban’s momentum is slowing and in the prospects for peace with them."