Gaddafi must leave, says Obama

"Muammar Gaddafi has lost legitimacy to lead, and he must leave," Obama said at a White House news conference.

The US president said, the "violence must stop...

Those who perpetrate violence against the Libyan people will be held accountable... The aspirations of the Libyan people for freedom, democracy and dignity must be met."

"I have approved the use of US military aircraft to help move Egyptians who have fled to the Tunisian border to get back home to Egypt,"

Tens of thousands of people from many different countries are fleeing Libya.

"We commend the governments of Tunisia and Egypt for their response, even as they go through their own political transitions," he added.

Obama said he has also authorized USAID to charter additional civilian aircraft to help people from other countries find their way home.

"We are supporting the efforts of international organizations to evacuate people as well," he said.

He has also directed USAID to send humanitarian assistance teams to the Libyan border, so that they can work with the United Nations, NGOs and other international partners inside Libya to address the urgent needs of the Libyan people.

With respect to America`s willingness to engage militarily, Obama said he has instructed the Department of Defense, and the State Department to examine is full range of options.

"I don`t want us hamstrung. I want us to be making our decisions based on what`s going to be best for the Libyan people in consultation with the international community," he said.

"We are doing that not just here in the United States within our own agencies, but we`re also doing it in consultation with NATO," he said.

"There may be situations in which Gaddafi is hunkered down in his compound but the economy -- or food-distribution systems in Tripoli, for example, start deteriorating. And we`re going to have to figure out how do we potentially get food in there," Obama said.