The talks in the UAE capital today come after President Barack Obama said NATO's mission in Libya was forging "inexorable" advances that meant it was only a matter of time before Moammar Gaddafi's departure.
The so-called International Contact Group meeting will build on a the May 5th gathering in Rome where Clinton and her partners agreed on a new fund to aid Libya's rebels and vowed to tap frozen assets of Gaddafi's regime.
US officials said the participants will discuss a "range of issues," including implementation of UN Security Council resolutions 1970 and 1973.
Resolution 1970 imposed bans on assets and travel on members of Gaddafi's regime as well as an arms embargo.
Resolution 1973 authorized "all necessary measures" to protect Libyan civilians, including air strikes on Gaddafi's ground forces and a no-fly zone.
The International Contact Group on Libya, which includes all the countries participating in the NATO-led campaign targeting Gaddafi's regime, held its inaugural meeting in Qatar, which participates in the NATO mission.
NATO has intensified its campaign, launching daily raids on Tripoli, but only 9 of NATO's 28 member states are taking part in the strikes. France and Britain are bearing the brunt of the load with helicopters now in their arsenal.
The other countries are the United States, Canada, Norway, Denmark, Belgium, Italy and non-NATO state the United Arab Emirates, which sent 12 warplanes to enforce the no-fly zone.
Countries such as Spain and the Netherlands, and non-NATO partner Sweden, have contributed combat jets but their roles are limited to enforcing the no-fly zone aimed at preventing Gaddafi attack planes from taking off.
Turkey, which reluctantly backed the mission, is only participating in the naval embargo.
Around a dozen NATO members are not contributing any assets to the mission, including Germany, which has refused to back the United Nations resolution that authorized the mission.
Weeks of air strikes on regime targets have thus far failed to force Gaddafi out.
"In addition to NATO countries, representatives from the United Nations, Arab League, European Union, Organization of Islamic Conference, and the Gulf Cooperation Council will be at the talks.
Source: Emirates 24/7