unfold

ing in the capital. The leader of the National Transitional Council, Mustafa Abdul Jalil, said he was worried there could be revenge attacks. If military commanders ignored him and carried out reprisals, he said, he would resign - a threat which gives a glimpse of the tensions within a movement now

on the brink of

forming a new government.

President Obama has praised the Libyan people for what he called their extraordinary sacrifice in

defy

ing the Gaddafi regime and fighting to overthrow it.

"Your courage and character have been

unbreakable

in the face of the tyrant. An ocean divides us, but we are joined in the basic human longing for freedom, for justice and for dignity. Your revolution is your own, and your sacrifices have been extraordinary. Now the Libya that you deserve is within your reach. Going forward, we will stay in close coordination with the TNC to support that outcome."

In other reaction, the UN Secretary General Ban Ki-moon warned that all United Nations members have a duty to

comply with

the International Criminal Court, which has issued arrest warrants against Colonel Gaddafi, his son Saif al-Islam and his intelligence chief.

The International Organisation for Migration says it has sent a ship to Tripoli to

evacuate

migrants. It can carry 300 passengers and is expected to arrive on Tuesday.

World News from the BBC