President Barack Obama says there will be no "let up" in the pressure that the U.S.-backed NATO coalition is applying to drive Moammar Gadhafi from power in Libya.
The coalition launched a withering bombardment on Gadhafi's stronghold of Tripoli on Tuesday. Gadhafi remains in power two months after an air campaign began, but Obama insists that Gadhafi will eventually have no choice but to step down.
British Prime Minister David Cameron says he and Obama agree on the need to be "turning up the heat" on Libya.
The two leaders spoke Wednesday at a news conference in London.