The Australia-based Institute for Economics and Peace released its 2019 Global Peace Index this month.

The IEP, a think tank that develops methods to " analyse peace and to quantify its economic value ," has released the GPI annually since 2007. A panel of experts oversees the GPI, and Economist Intelligence Unit analysts score each country on qualitative factors.

The report measures the peacefulness of 162 countries by rating each one on 23 qualitative and quantitative metrics, which are divided into three categories.

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The ongoing domestic and international conflict category includes deaths from organized conflict and relations with neighboring countries. The societal safety and security category includes political instability, violent crime, and the incarcerated population. The militarization category includes access to weapons and weapons imports and exports.

In 2019, overall global peacefulness increased for the first time in five years, but the world is still less peaceful than it was 10 years ago, the report says. This year, Afghanistan replaced Syria as the least peaceful country in the world.

Russia makes the top 10 list of least peaceful countries.

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Russia has one of the highest per-capita rates of weapons exports, according to the report, and is highly militarized, which partially explains its rank on this list.

Its engagement in the Syrian conflict increased the country's number of deaths from external conflict, and overall approval of its leadership declined from 35% to just over 30% from 2008 to 2018.

It is the least peaceful country in its region, according to the report.

The Democratic Republic of the Congo is at high risk for severe flooding, contributing to the likelihood of future conflict.

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Goran Tomasevic/REUTERS

Violence in the DRC is interfering with health workers' ability to treat the country's most recent Ebola outbreak, which has claimed 1,396 lives in that country, according to the World Health Organization .

Gangs and militia groups attack healthcare facilities, killing a Cameroonian doctor working to control the outbreak earlier this year.

Rising violence in Libya, coupled with its high risk for flooding, make it the eighth least peaceful country in the world.

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Goran Tomasevic/REUTERS

Violence in the Central African Republic costs the country approximately 47% of its GDP.

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Baz Ratner/Reuters

Seleka rebels and Anti-Balaka militia members continue to clash in the Central African Republica, pushing the country into chaos and creating an internally displaced population of 620,000, with 570,000 refugees headed to neighboring countries like Cameroon and the Democratic Republic of the Congo, according to Reuters .

Somalia is at significant risk for drought, making the country more prone to conflict.

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Zohra Bensemra/REUTERS

In 2018, Iraq saw a decrease in state-backed violence and in the number of refugees and internally displaced persons as a percentage of its population.

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REUTERS/Alaa Al-Marjani

Still, Iraq deals with significant conflict, both internal and external. The are still remnants of ISIS, despite its official defeat , in part because divisions in Iraq's security forces have undercut efforts to eliminate the group.

Yemen remains the site of the world's worst humanitarian crisis, as it is still locked in a proxy war between Saudi Arabia and Iran.

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Hani Mohammed/AP

South Sudan's ongoing conflict, as well as its high risk for climate disaster, contribute to its placement in the GPI.

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George Philipas/Reuters

Syria's conflicts place it high on the list, although it is no longer the least peaceful country.

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Syrian Democratic Forces, via AP, File

Syria is now GPI's second least peaceful country in the world. The GPI cites ISIS' defeat in the town of Baghuz earlier this year as key to moving the country from the first spot to the second.

Afghanistan is the least peaceful country in the world, according to the index

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Afghanistan was designated the least peaceful country in the world by the GPI in 2019, supplanting Syria.

Violence in Afghanistan cost it 47% of its GDP, and the ongoing conflict has killed 3,804 people last year, including 973 children the highest number ever in the country, according to the UN Assistance Mission in Afghanistan.

Afghan citizens feel 20% less safe than they did in 2008, according to the GPI. Confidence in the country's military has fallen by more than 31 percentage points since 2013.

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