Outgoing US Secretary of State Hillary Clinton has sidestepped questions about whether she would run for president in 2016.
In a CBS television interview done jointly with President Barack Obama, she denied there were any political tea leaves to read.
Mrs Clinton, 65, also acknowledged she still has "some lingering effects" from a recent concussion and blood clot that she said doctors expect to disappear over time.
Mr Obama beat Mrs Clinton in a bitter Democratic primary campaign to run for president in 2008.
He surprised many by choosing her as his secretary of state, a job she said she initially turned down.
Mrs Clinton travelled to a record 112 countries during her tenure.
She has said she wants to take a break from public life, but has not said she will retire.
She told "60 Minutes" that: "The president and I care deeply about what's going to happen for our country in the future.
"And I don't think, you know, either he or I can make predictions about what's going to happen tomorrow, or the next year."
Democratic Senator John Kerry, who unsuccessfully ran for president in 2004, is expected to be confirmed as Mr Obama's new Secretary of State as early as this week.
After Mr Obama heaped praise on Mrs Clinton's diplomatic achievements, he chided the show's host, Steve Kroft, who asked about "the date of expiration on this endorsement" of Mrs Clinton.
"You guys in the press are incorrigible. I was literally inaugurated four days ago. And you're talking about elections four years from now," Mr Obama said.
Addressing her recent health issue, a concussion and blood clot that sent her to the hospital, Mrs Clinton said: "The doctors tell me that that will all recede. And so thankfully I'm, you know, looking forward to being at full speed."
She said she had since been wearing glasses instead of contact lenses because of "lingering effects" from the concussion "that are decreasing, and will disappear".
Mrs Clinton returned from a European tour on 7 December suffering from a stomach virus.
On 15 December, the US State Department announced she had become dehydrated, fainted and suffered a concussion.
During a check-up afterwards, she was diagnosed with the blood clot, hospitalised and treated with blood thinners.