One day after meeting with his war council on Afghanistan, President Barack Obama is reportedly sending his advisors back to the drawing board.
A senior administration official said the president has decided not to accept any of the current options.
He apparently wants clarification on how and when U.S. troops would turn over responsibility to the Afghan government, CNN reported.
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During Wednesday's meeting, the president and his council considered at least four options including sending an additional 20,000 to 40,000 troops to the war-torn region.
"The key sticking points appear to be timelines and mounting questions about the credibility of the Afghan government," the official said.
Obama's position comes amid growing concerns over the government - and its ability to secure its own country.
In a pair of classified cables, U.S. Ambassador to Afghanistan Karl Eikenberry objected to a troop increase fearing it could increase Afghanistan's dependence on the U.S., the Washington Post reported.
Meanwhile, Thursday Obama is traveling to Japan, the first stop on his tour of Asia.