WITH so many conflicts in the world, Nagorno-Karabakh gets little attention. The bloody fighting between Armenian and Azerbaijani forces in the mountainous enclave this week was a reminder that it should. Tanks and artillery traded fire; at least 50 people were killed in four days. The spectre loomed of a wider war, one that could draw in Russia, Turkey and Iran. A ceasefire brokered in Moscow on April 5th appears to be holding for now. But it brought the two foes no closer to peace.

The fighting dates back to 1988, when Nagorno-Karabakh’s ethnic Armenians attempted to secede from Azerbaijan. (At the time, both Armenia and Azerbaijan were republics of the Soviet Union.) As the Soviet Union broke apart in 1991, the conflict grew into a full-scale war. By 1994 some 30,000 people were dead and Nagorno-Karabakh was under Armenian control. Russia, America and France brokered a ceasefire, but sporadic shooting continued. Rather than time healing old wounds, it deepened them.

The fact that the assault began with both the Azeri and Armenian presidents in Washington for a security summit suggests that it was no accident. Discontent with the stalled diplomacy may have pushed Azerbaijan to try to change facts on the ground. “This is about bringing Armenia to the negotiating table,” says Zaur Shiriyev of Chatham House, a British think-tank.On April 2nd the frustration spilled over. Azerbaijani forces seized settlements and strategic heights along the front. (Both sides accuse each other of starting the fighting.) The campaign to capture territory marked a departure from an earlier Azeri strategy of attacks aimed at “pressure and posturing”, says Richard Giragosian, head of the Regional Studies Centre, a think-tank in Yerevan. Armenian and Karabakhi officials say they retook the captured land, but their claims have not been independently verified. The outburst demonstrates that the 1994 ceasefire framework, with no peacekeepers and only a handful of unarmed monitors, “no longer fits”, says Thomas de Waal of the Carnegie Endowment for International Peace.

At home, the political dividends were immediate. The brief war “created euphoria”, says Anar Valiyev, a Baku-based analyst. The government boasted of newfound military superiority, the result of the oil-rich state’s expansion of defence spending (from $177m in 2003 to $3 billion in 2015). Casualties were seen as justified. “The people are hungry for victories,” says Mr Valiyev.

Some on the Armenian side suggested that Turkey, a longtime ally of Azerbaijan and new foe of Russia, helped provoke the violence. Turkey’s president, Recep Tayyip Erdogan, fueled the speculation by declaring that he would stand by Azerbaijan “to the end”. Yet the Turkish role is a red herring, says Laurence Broers of Chatham House: “The motives are local and not about great-power competition.”That may help Azerbaijan’s president, Ilham Aliyev, cushion the pain of falling oil prices. Oil and gas accounted for 94% of the country’s exports in 2013. As prices dropped over the past two years, the Azeri central bank burned up more than two-thirds of its reserves supporting the currency before allowing it to devalue sharply. In January 2016 the government imposed a 20% tax on foreign-exchange transactions and sounded out the International Monetary Fund about a possible loan. Rising prices and unemployment prompted protests in several smaller towns earlier this year, a rarity under Mr Aliev’s tight watch.

Nonetheless, peacemaking will require a push from powers such as Russia. Moscow has closer ties with Armenia: it has a military base there and a treaty obligation to defend the country against attacks on its territory (excluding Nagorno-Karabakh). But Russia also sells large quantities of arms to Baku. Any peace plan depends on external pressure overcoming local resistance. The stakes of diplomatic failure have never been clearer: little is left to prevent a repeat, or worse, of last week’s clashes. “Now there is no excuse for the outside powers to say the situation can just be managed,” says Mr de Waal.

At least 30 soldiers and a boy were reported killed as heavy fighting erupted Saturday between Armenian and Azerbaijani forces over the separatist region of Nagorno-Karabakh.

The fighting was the worst outbreak since a full-scale war over the region ended in 1994. Since then, mountainous Nagorno-Karabakh — officially part of Azerbaijan — has been under the control of local ethnic Armenian forces and the Armenian military.

Armenian forces also occupy several areas outside Nagorno-Karabakh proper. The sides are separated by a demilitarized buffer zone, but small clashes have broken out frequently.

Each side blamed the other for Saturday’s escalation.

In a statement, Azerbaijan’s Defense Ministry said 12 of its soldiers “became shahids” — Muslim martyrs — and said one of its helicopters was shot down.

The statement also claimed that more than 100 Armenian forces were killed or wounded and that six tanks and 15 artillery positions were destroyed.

Armenian President Serzh Sargsyan told his national security council that 18 Armenian soldiers were killed and 35 wounded.

Armenia earlier claimed to have inflicted heavy damage on Azerbaijani forces, but did not immediately give figures. A statement from the Nagorno-Karabakh defense ministry claimed more than 200 Azerbaijani soldiers were killed, but there was no corroboration for that figure.

“This is the most wide-scale military action that Azerbaijan has tried to carry out since the establishment of the 1994 cease-fire regime,” Sargsyan said.

David Babayan, a spokesman for Nagorno-Karabakh’s separatist president, said a boy of about 12 was killed and two other children were wounded in a Grad missilebarrage by Azerbaijani forces.

Russian President Vladimir Putin urged all sides to cease firing and “show restraint,” Russian news agencies quoted Kremlin spokesman Dmitry Peskov as saying. Russia’s foreign and defense ministers contacted their Azerbaijani and Armenian counterparts in hopes of stabilizing the situation, the ministries said.

“The situation along the entire length of the line of opposition between Karabakhi and Azerbaijani armed forces continues to be extremely difficult,” Armenian defense ministry spokesman Artsrun Hovhannisyan told The Associated Press.

U.S. Secretary of State John Kerry issued a statement saying that the United States “condemns in the strongest terms the large scale ceasefire violations” along the Nagorno-Karabakh buffer zone.

“We urge the sides to show restraint, avoid further escalation, and strictly adhere to the ceasefire,” Kerry said. He called on both sides to enter into “immediate negotiations” on a comprehensive settlement of the conflict under the auspices of theOrganization for Security and Cooperation in Europe.

Years of negotiations under the OSCE have brought little progress in resolving the territorial dispute.

The negotiation efforts are led by a troika of envoys from the United States, Russia and France. On Saturday, the envoys jointly issued a statement calling on the sides “to stop shooting and take all necessary means to stabilize the situation on the ground.”

Armenian forces also occupy several areas outside Nagorno-Karabakh.

The Armenian Defense Ministry said Azerbaijan used aircraft, tanks and artillery to try to make inroads into Nagorno-Karabkh and that “Azerbaijani authorities bear all responsibility for the unprecedentedly supercharged situation.”

The Azerbaijani Defense Ministry said the fighting began when Armenian forces fired mortars and large-caliber artillery shells across the front line. Ministry spokesman Vagif Dargyakhly told The Associated Press that more than 120 shots were fired, some of which hit civilian residential areas.