Tripoli, Libya (CNN) -- International efforts to persuade Libyan leader Moammar Gadhafi to step down ratcheted up Tuesday, as world leaders moved against him on financial and political fronts, strengthened their rhetoric and moved military might into the region. "We have joined the Libyan people in demanding that Gadhafi must go -- now, without further violence or delay -- and we are working to translate the world's outrage into action and results," Secretary of State Hillary Clinton told the House Foreign Affairs Committee. The Obama administration is considering whether it should cut diplomatic ties with Libya, a senior U.S. official told CNN. "Whether to maintain relations or sever them is under review," the official said.