French president Emmanuel Macron reviews the troops as he visits the French military base in Djibouti on March 12, 2019. - French President Macron tours Horn of Africa nations, with stops in Djibouti, Ethiopia and Kenya. (LUDOVIC MARIN/AFP/Getty Images)Guns are displayed at a security and defense equipment fair in Baghdad on March 9, 2019. (SABAH ARAR/AFP/Getty Images)Family members and onlookers watch as the French Navy's (Marine Nationale) flagship carrier Charles de Gaulle sails out of the port of Toulon for a four month mission in Indian Ocean on March 5, 2019. (CHRISTOPHE SIMON/AFP/Getty Images)The USS Blue Ridge (LCC-19), the U.S. 7th Fleet Flagship, is anchored off Manila Bay west of Manila, Philippines for a routine port call Wednesday, March 13, 2019. Capt. Eric Anduze, Commander of the USS Blue Ridge, renewed an American vow to "sail, fly and operate wherever the law allows us to" amid China's objection to U.S. military presence in the disputed South China Sea. (AP Photo/Bullit Marquez)Visitors look at military weapon systems during the DEFLAB tech event at the National Military Museum in Soest, The Netherlands, on March 7, 2019. - With this event The Netherlands' Ministry of Defence and its partners from the education and business sectors hope to recruit new technical talent. (ROBIN VAN LONKHUIJSEN/AFP/Getty Images)A column of armored Turkish military vehicles drives on a patrol along a road in the de-militarized zone in Syria's northern Idlib province near the town Saraqib on March 8, 2019. (OMAR HAJ KADOUR/AFP/Getty Images)French soldiers from the 2nd RIMA (Marine Infantry Regiment) take part in a live-fire exercise, on March 11, 2019 at the Canjuers military camp, southeastern France, as part of the launching of the weapons interarmy training centre CETIA Opera (Centre d'Entrainement au Tir Interarmes). (GERARD JULIEN/AFP/Getty Images)The corvette Burgazada of the Naval Forces of Turkey moors at the harbour of the Russian port of Novorossiysk on March 6, 2019. - Two Turkish warships minesweeper Akcay and corvette Burgazada participate in "The Blue Motherland - 2019" military exercises in the Black sea. (STR/AFP/Getty Images)A military vehicle patrols the streets of Kaduna during Nigerias governorship and state assembly elections, on March 9, 2019. - For the second time in a fortnight, Nigerians went to the polls to elect governors in 29 of Nigeria's 36 states, all state assemblies and administrative councils in the Federal Capital Territory of Abuja. (KULA SULAIMON/AFP/Getty Images)