President Obama called Britsh Prime Minister David Cameron Tuesday to discuss a wide range of options to deal with the uprising Libya, including a no-fly zone.

Obama has been in touch with several European leaders, including Cameron, French President Nicolas Sarkozy and German Chancellor Angela Merkel about ways for the international to stop the violence in Libya and oversee the departure of leader Moammar Gadhafi. European leaders have suggested enforcing a no-fly zone over Libyan airspace as part of a proposal.

"The president and the prime minister agreed to press forward with planning, including at NATO, on the full spectrum of possible responses, including surveillance, humanitarian assistance, enforcement of the arms embargo, and a no fly zone," says a White House readout of the call.

The Obama administration has expressed skepticism toward a no-fly zone, saying it could undermine the popular revolt against Gadhafi. But the president has also received pressure from members of Congress to institute a no-fly zone as a quick way to aid Libyan civilians who have been subject to air assaults.

Obama's discussion and White House press secretary Jay Carney's comments Tuesday indicate the White House has not yet ruled out the option.

“There are complexities and realities involved in the adoption and implementation of a measure like a no-fly zone that we all need to be aware of as we consider it," Carney said aboard Air Force One, according to a pool report. "It is an option we are actively considering, it is also one that carries with it complexities and other things that everyone needs to be aware of."