Here's a look at some of the international military assets in or heading to the region to help enforce the UN-sanctioned no-fly zone over Libya:
US
After barrage of attacks by sea-launched Tomahawk cruise missiles yesterday an array of US warplanes - including several Air force B-2 stealth bombers - followed in the pre-dawn hours today with a co-ordinated assault using precision-guided bombs
Navy EA-18G Growlers launched from unspecified land bases to provide electronic warfare support over Libya.
Marine AV-8B Harriers from the USS Kearsarge sailing in the Mediterranean conducted strikes against Gaddafi's ground forces and air defences.
FRANCE
Deployed eight Rafale and four Mirage jets to survey rebel-held Benghazi; one fired on a Libyan military vehicle in first military strike of operation.
Six C-135 refuelling tankers
1 AWACS surveillance plane
Deployed the Charles de Gaulle aircraft carrier to the region from Toulon, accompanied by the anti-submarine frigate Dupleix, the Aconit frigate and a refuelling ship, La Meuse.
CANADA
Sent six F-18s to Italy base; 140 military personnel involved.
Frigate HMCS Charlottetown is in Mediterranean for possible staging ground for Canadian forces.
DENMARK
Six F-16s arrived at US air base in Sigonella, Sicily and could be deployed as early as today; 132 support staff.
ITALY
Offered use of seven military bases: US air bases at Sigonella, Sicily and Aviano in northern Italy; Italian air bases in Amendola near Foggia, Decimomannu in Sardinia, Gioia del Colle near Bari, base on Sicilian island of Pantelleria, and the military airport of Trapani, Sicily.
Proposed Nato base in Naples serve as co-ordination point for operation.
Has four anti-radar and anti-missile Tornados and six other aircraft available to fly with 15 minutes' notice.
Aircraft carrier Giuseppe Garibaldi off Sicily with eight aircraft aboard.
SPAIN
Sent four F-18s and a Boeing 707 refuelling plane to Italy base.
Deploying a submarine, naval frigate and a surveillance plane.
Placed two bases at Nato's disposal, Rota and Moron de la Frontera, where several US Air Force planes were seen on Friday.
BRITAIN
Said it would send Typhoon and Tornado jets to air bases today or tomorrow.
Britain's air base in southern Cyprus, RAF Akrotiri, supporting AWACS surveillance aircraft and has a team of personnel there to co-ordinate British aircraft movement.
Two British frigates, HMS Westminster and HMS Cumberland, are in the Mediterranean off Libya's coast.
NORWAY
Offered six F-16s, with around 100 support staff, but operational capabilities five-six days off.
Considering contributing an Orion maritime surveillance plane.
BELGIUM
8 Belgian F-16s and 200 air force personnel are now at the Greek air base of Araxos, west of Athens, the Belga news agency reported. They will be ready to start flying missions tomorrow.