India, Feb. 20 -- President Donald Trump on Thursday accused former President Barack Obama of mishandling sensitive material, days after the Democrat spoke about aliens during an interview. Speaking to reporters aboard Air Force One, Trump claimed Obama made a 'big mistake'.

"He gave classified information; he's not supposed to be doing that," Trump said. "Big mistake."

Trump insisted Obama's comments amounted to revealing restricted material, though he declined to offer his own view on aliens.

"I don't know if they're real or not, I can tell you he gave classified information," he continued. "He's not supposed to be doing that. He made a big mistake. He took it out of classified information."

Pressed further, he added, "No, I don't h...