FILE - In this June 19, 2018 file photo, photographers take pictures of what U.A.E. officials described as an Iranian Qasef drone captured on the battlefield in Yemen during a news conference in Abu Dhabi, United Arab Emirates. A deadly bomb-laden drone flown by Yemen's Houthi rebels flew into a military parade on Thursday, Jan. 10, 2019, outside of the southern port city of Aden, targeting high-ranking military officials in Yemen's internationally recognized government. The brazen attack threatens U.N.-brokered peace efforts to end the yearslong war tearing at the Arab world's poorest nation.
FILE - In this June 19, 2018 file photo, photographers take pictures of what U.A.E. officials described as an Iranian Qasef drone captured on the battlefield in Yemen during a news conference in Abu Dhabi, United Arab Emirates. A deadly bomb-laden drone flown by Yemen's Houthi rebels flew into a military parade on Thursday, Jan. 10, 2019, outside of the southern port city of Aden, targeting high-ranking military officials in Yemen's internationally recognized government. The brazen attack threatens U.N.-brokered peace efforts to end the yearslong war tearing at the Arab world's poorest nation. Jon Gambrell, File AP Photo
FILE - In this June 19, 2018 file photo, photographers take pictures of what U.A.E. officials described as an Iranian Qasef drone captured on the battlefield in Yemen during a news conference in Abu Dhabi, United Arab Emirates. A deadly bomb-laden drone flown by Yemen's Houthi rebels flew into a military parade on Thursday, Jan. 10, 2019, outside of the southern port city of Aden, targeting high-ranking military officials in Yemen's internationally recognized government. The brazen attack threatens U.N.-brokered peace efforts to end the yearslong war tearing at the Arab world's poorest nation. Jon Gambrell, File AP Photo