Civil wars

FILE - In this Feb. 26, 2011 file photo, a Libyan oil worker, works at a refinery inside the Brega oil complex, in Brega, eastern Libya. On Sunday, Jan. 19, 2020, Libya’s National Oil Corporation said that guards under the command of Khalifa Hifter’s forces shut down two key oil fields in the country’s southwestern desert, following the earlier closure of all eastern export terminals.(AP Photo/Hussein Malla, File)

In this Friday, Nov. 15, 2013, file photo, a Sri Lankan ethnic Tamil woman cries holding a portrait of her missing son during a protest in Jaffna, Sri Lanka. Sri Lanka's president has decided that tens of thousands of people still missing from the country's quarter-century civil war will be formally declared dead and death certificates will be issued, his office said Monday. (AP Photo/Eranga Jayawardena)

Turkish Foreign Minister Mevlut Cavusoglu, third left, Turkish Defense Minister Hulusi Akar, second left, Russian Foreign Minister Sergey Lavrov, fourth right, and Russian Defense Minister Sergei Shoigu, third right, attend the talks in Moscow, Russia, Monday, Jan. 13, 2020. Foreign and defense ministers of Russia and Turkey met as part of an effort by Moscow and Ankara to sponsor Monday's talks between rival parties in Libya in the Russian capital. (AP Photo/Pavel Golovkin, Pool)

Turkish Foreign Minister Mevlut Cavusoglu, third left, Turkish Defense Minister Hulusi Akar, second left, Russian Foreign Minister Sergey Lavrov, fourth right, and Russian Defense Minister Sergei Shoigu, third right, attend the talks in Moscow, Russia, Monday, Jan. 13, 2020. Foreign and defense ministers of Russia and Turkey met as part of an effort by Moscow and Ankara to sponsor Monday's talks between rival parties in Libya in the Russian capital. (AP Photo/Pavel Golovkin, Pool)

Russian President Vladimir Putin, right, Syrian President Bashar Assad, left, and Russian Defense Minister Sergei Shoigu, center, visit the Umayyad Mosque in Damascus, Syria, Tuesday, Jan. 7, 2020. Putin has traveled to Syria to meet with President Bashar Assad, a key Iranian ally. The rare visit Tuesday comes amid soaring tensions between Iran and the United States following the U.S. drone strike last week that killed a top Iranian general who led forces supporting Assad in Syria's civil war. (Alexei Nikolsky/Sputnik, Kremlin Pool Photo via AP)

FILE - In this Dec. 26, 2018, file photo, members of the military wait outside facilities where President Donald Trump and first lady Melania Trump are visiting at Ain al-Asad air base, Iraq. Iran said Wednesday, Jan. 8, 2020, it has launched "tens" of surface-to-surface missiles at Iraq's Ain al-Asad air base housing U.S. troops over America’s killing of a top Iranian general. (AP Photo/Andrew Harnik, File)

This image released by the Syrian Presidency shows Russian President Vladimir Putin, left, meeting with Syrian President Bashar Assad, center, in Damascus, Syria on Tuesday, Jan. 7, 2020. Putin's visit is the second to the war-torn country where his troops have been fighting alongside Syrian government forces since 2015. (Syrian Presidency via AP)

FILE - In this Nov. 22, 2013 file photo, Iraqi and Lebanese Shiite fighters from a group called the Hussein Brigade, loyal to Syria's President Bashar Assad, use a helmet to draw a sniper into view during clashes against the Sunni-dominated Free Syrian Army in the town of Hejeira, Syria, outside the capital Damascus. As Iran's frontman in Syria since 2011, Qassem Soleimani, Commander of Iran's Quds Force, brought in and organized thousands of Shiite militiamen from outside Syria to back President Bashar Assad's overstretched military, providing firepower and skills. (AP Photo/Jaber al-Helo, File)

A woman mourns in a demonstration over the U.S. airstrike in Iraq that killed Iranian Revolutionary Guard Gen. Qassem Soleimani in Tehran, Iran, Jan. 3, 2020. Iran has vowed "harsh retaliation" for the U.S. airstrike near Baghdad's airport that killed Tehran's top general and the architect of its interventions across the Middle East, as tensions soared in the wake of the targeted killing. (AP Photo/Vahid Salemi)