In oil-rich Libya, an eastern warlord attacks the capital. Why now? And what's at stake?

Libya is again facing the prospect of all-out civil war as forces from the oil-rich country's east loyal to a former army commander battle to take control of the capital, Tripoli.

Since the 2011 ouster of long-time dictator Col.Moammar Gadhafiby Libyan dissidents and a NATO-ledcoalition, including Canada, the country has been torn between competing militias, political factions and Islamistextremists vying for control.

The United Nations recognizes the current Government of National Accord (GNA) in Tripoli led by Prime Minister Fayez al-Seraj, 59. He is supported by militia groups in the capital and from the country's west.

Khalifa Haftar, a former general in Gadhafi's army, leads the forces from eastern Libya who are currently attacking the capital on behalf of his self-described Libyan National Army (LNA), which backs a rival government in the east.

The desire for power and access to the country's wealth by rival leaders, rather than competing ideologies or policy differences, is driving the current conflict, said Nathan Vest, Libya specialist at the RAND Corporation, a California-based research group linked to the U.S. military.

"It's all about controlling the levers of power, rather than championing one ideology over another," Vest told CBC News. "Neither government is a great proponent of Western democracy."

While Haftar has partially framed his fight as a battle against Islamist groups, ultra-conservative forces make up an important section of his support, Vest said.

CBC News breaks down the current conflict.

Why is this happening now?

Haftar's forces had been gaining strength and territory for some time, withthe capture of Benghazi in July 2017 as their most notable victory. The assault on Tripoli launched on April 4 came 10days ahead of a scheduled UN-sponsored peace conference that aimed to launch general and presidential elections in late 2019 to resolve the country's political deadlock.

"Although the UN mission in Libya has expressed its intention to go ahead with the conference, it is now unlikely to take place, formalizing the de facto collapse of the peace process," wrote Ludovico Carlino, a Middle East analyst for IHS Markit, a global consulting firm.

Haftar likely launched his attack ahead of the conference, as he believed his forces were strong enough to take control of the country by crushing or co-opting other militias and tribal groups, meaning they wouldn't have to share power, said Vest.

Will rebel forces from eastern Libya be successful?

For now, that seems unlikely.

"The LNA is unlikely to be able to capture Tripoli and defeat those militias loyal to the UN-recognized Government of National Accord (GNA),"IHS reported. "Haftar has likely underestimated the capabilities of assorted militias supporting the GNA."

A protracted conflict looks likelyunless Haftar pulls back.

So far, more than 2,500 people have been displaced by the fighting, according to a UN official. The humanitarian toll of recent violence will increase markedly if fighting moves from Tripoli's southern suburbs into the heart of the capital.

What is Canada's position?

In 2011, Canada sent CF-18 jets to bomb targets in Libya as part of NATO's Operation Unified Protector to oust Gadhafi. A Canadian general commanded the overall NATO mission.

After Gadhafi fell, Canada's Conservative government staged a victory parade in Ottawa in November 2011, including a fly-over by fighter jets involved in the bombing campaign.

Following its initial intervention in tandem with NATO, Canada has refused to take further military action as Islamist fighters, competing militias, human smugglers and other armed groups have plunged the country further into crisis.

On Tuesday, a spokesperson for Global Affairs told CBC via email: "Canada is deeply concerned by the ongoing armed clashes in Tripoli and its outskirts and calls on all parties to de-escalate tensions."

He urged all parties in the conflict to work with the UN to allow a ceasefire and to protect civilians. "Canada reiterates that there is no military solution to the crisis."

What's at stake for oil markets?

Libya has the world's ninth-largest oil reserves, or some 48 billion barrels, according to the U.S. Energy Information Administration. At the end of 2018, Libya was exporting just over onemillion barrels of oil per day, according to Bloomberg.

Global oil prices spiked following Haftar's move on the capital. His forces already control most of Libya's oil production, but they do not control the national oil company in Tripoli or the central bank, which dispersesoil revenue to the government, publicworkers and some militias.

In battling for Tripoli, he intends towrest control of the central bank from the GNA, and take the town of Zawiya, west of Tripoli, home to a major refinery and oil-export terminal, analysts say.

In a somewhat bizarre situation, both major factions vying for controlare being paid with Libya's oil wealth, Vest said.

If violence continues and oil exports decline further, international prices are likely to rise.

How does this impact migration?

For European countries, particularly Italy, which colonized Libya and is on the frontline of Europe'smigration crisis, stemming migration from Africa via Libya underscores much of their engagement with factions in the country.

"They want oil to travel northward, not people," wrote Vijay Prashad, professor of international studies at Trinity College in Connecticut. "Haftar, at the cost of the Libyans themselves, will make that happen."

Other analysts say the current GNA government has also been happy to work with European countries on stemming migration as it means itreceives money and military equipment, including coast guard patrol boats.

Videos showing reported slave markets selling African migrants in Libya have elicited widespread condemnation, but co-ordination between European governments and Libyan factions on stemming migration continues. This is likely to endure regardless of whether Seraj or Haftar end up on top.

What lessons can be learned from the conflict?

Critics of foreign interventions say Libya is a prime example of what can go wrong with so-called democracy promotion overseas.

The country's current crisis also exemplifies the lost promise of the Arab Spring. What started as a revolt against a brutaldictator has descended into lawlessness and factional conflict.

Kim Richard Nossal, a political science professor at Queen's University in Kingston, Ont., said Canada and the other 13 NATO members and four non-NATO members that contributed armed forces to oust Gadhafi are unlikely "to acknowledge responsibility for 'breaking' Libya."

They're even less likely to "actually do anything concrete about it" now that it's on thebrink of civil war, he told CBC News via email.