Saudi Arabia is running out of time to explain to the Trump administration what happened to journalist Jamal Khashoggi within its consulate in Turkey.

The administration increasingly regards Saudi Arabia's denial of any involvement of Khashoggi's disappearance as untenable, and President Donald Trump and his aides are more and more convinced that the Washington Post writer died after entering the Saudi Arabian Consulate in Istanbul on Oct. 2 to pick up a document for his wedding, said three U.S. officials who asked not to be identified because of the sensitivity of the matter.

Despite increasing pressure from Congress, Trump is reluctant to cancel multimillion-dollar arms sales to Saudi Arabia out of concern the U.S. ally will turn to Russia or China instead. But a range of other punishments are under discussion within the administration, from downgrading diplomatic relations or sanctioning Saudi officials to following major U.S. companies in withdrawing officials from an investment conference in Riyadh later this month.