Kerry says working into the night on Iran deal on 'tricky issues'

LAUSANNE: US Secretary of State John Kerry said Monday that he and his global counterparts would be working into the night to resolve "tricky issues" blocking a nuclear deal with Iran.

"There still remain some difficult issues. We are working very hard to work those through. We are working late into the night and obviously into tomorrow," Kerry told a CNN reporter in Lausanne, adding "everyone knows the meaning of tomorrow" when a deadline for the outlines of a deal expires at midnight.