clarify why the United States is convinced that the transfers happened and make it unreasonable for Sargsyan to continue his denials. According to Der Spiegel, due to the arms transfer to Iran, Sargsyan bore partial responsibility for killing or wounding American soldiers. At a 14 January 2009 meeting with the then Ambassador of the United States, Mahley with Sargsyan and NSS Chairman Gorik Hakobyan, the Government of Armenia were presented with evidence of weapons purchased by Armenia, shipped to Iran and recovered from Iran-backed Iraqi insurgent groups which fought against United States troops in Iraq. Hakobyan had tried to lay the blame on Bulgaria for diverting the responsibility from Armenia's involvement but Ambassador Mahley presented facts showing the arms transfer and serial numbers of weapons were used to kill an American soldier in an armed attack on United States troops on 31 January 2008. The United States military personnel continued to recover arms from the Sargsyan deal at the hands of Iraqi insurgents. One instance was the recovery of an arms cache in Baghdad on 15 February 2008, which belonged to the Hizballah Brigades, an Iranian-backed Iraqi militant group. Among mostly Iran manufactured weapons in the raid were six Bulgarian RPG-22 anti-tank weapons, production lot and serial numbers of which indicated they were produced by the Bulgarian firm which sold the weapons to Armenia. Similar finds were in mid-March 2008 in Baghdad, when two RPG-22 launch tubes were recovered during the ambush of American troops resulting in injuries of American soldiers. The lot and serial numbers matched and handwritten on both launchers was the Arabic message "Rejoice – Islamic Resistance of Iraq – Hizballah Brigades". However, in the course of the investigation, Armenian officials accepted the U.S. recommendations regarding border security and unannounced visits by US experts. Armenian genocide The Armenian genocide was the systematic mass extermination of 1.5 million Armenians by the Ottoman Turks from 1915-1923. The Turkish government has since instituted a century-long campaign of denial, despite there being an overwhelming and abundant international scholarly consensus of the reality of the genocide. The United States had historically been uneasy to anger its NATO ally, Turkey, by recognizing the genocide, as Turkey has diplomatically retaliated against nations such as France, Germany, and Italy after they each formally recognized the genocide in their respective parliaments. On 29 October 2019, the United States House of Representatives voted 405-11 in favor of