FILE - In this file photo dated Thursday, Dec. 13, 2018, Belgian Prime Minister Charles Michel arrives for an EU summit in Brussels. Belgian Prime Minister Charles Michel has announced his resignation in address at parliament, Tuesday, Dec. 18, 2018, and says he will notify the king. (AP Photo/Geert Vanden Wijngaert, FILE)

OBIT - In this 2015 photo provided by Roton Music Romania, Romanian-Canadian singer Anca Pop poses for a portrait in Bucharest, Romania. Romanian police said Tuesday, Dec. 18, 2018 that singer-songwriter Anca Pop, 34 years-old, has died after her car plunged into the River Danube. Emergency authorities identified her body after divers found her car late Monday in southwestern Romania. (Roton Music via AP, HO)

Sun rays fall through the clouds over the banking district as a runner passes by in Frankfurt, Germany, Tuesday, Dec. 11, 2018. (AP Photo/Michael Probst)

This May, 2017, photo shows Japanese Maritime Self-Defense Force’s helicopter carrier Izumo. Japan has adopted new defense guidelines, calling for converting a destroyer into Japan’s first aircraft carrier to deploy advanced U.S.-made stealth fighters, as Japan seeks to increase defense spending and bolster arms capability in coming years. The new national defense plan, approved Tuesday, Dec. 18, 2018, by Prime Minister Shinzo Abe’s Cabinet, calls for refitting an existing helicopter carrier into one that can deploy expensive F-35B fighters capable of short take-offs and vertical landings.(Kyodo News via AP)

FILE - In this March 13, 2009, file photo, Zalmay Khalilzad, special adviser on reconciliation speaks during a news conference in Kabul, Afghanistan. The Taliban say they are holding "another" meeting on Monday, Dec. 17, 2018 with U.S. officials, this time in the United Arab Emirates and also involving Saudi, Pakistani and Emirati representatives in the latest attempt to bring a negotiated end to Afghanistan's 17-year war. (AP Photo/Rafiq Maqbool)

FILE - In this Nov. 11, 2018 file photo, Meghan Markle, Duchess of Sussex, attends the Remembrance Sunday ceremony at the Cenotaph in London. Meghan Markle’s father appealed to his daughter to call him, saying on Monday, Dec. 17, 2018, that they hadn’t been in touch since her wedding to Prince Harry in May. (AP Photo/Alastair Grant, File)

Residents react during a gathering being held in a central square of the eastern French city of Strasbourg, Sunday Dec.16, 2018 to pay homage to the victims of a gunman who killed four people and wounded a dozen more. The gathering was held in Kleber Square by a Christmas market and near where the gunman opened fire last Tuesday evening. (AP Photo/Jean-Francois Badias)

FILE - In this Sept. 26, 2018, file photo, visitors look at a display for 5G wireless technology from Chinese technology firm Huawei at the PT Expo in Beijing. While a Huawei executive faces possible U.S. charges over trade with Iran, the Chinese tech giant's ambition to be a leader in next-generation telecoms is colliding with security worries abroad. (AP Photo/Mark Schiefelbein, File)

Pope Francis hugs a baby dressed as Santa Claus during audience with children and family from the dispensary of Santa Marta, a Vatican charity that offers special help to mothers and children in need, in the Paul VI hall at the Vatican, Sunday, Dec. 16, 2018. (AP Photo/Gregorio Borgia)

Ukrainian President Petro Poroshenko gestures while speaking at a closed-door synod of three Ukrainian Orthodox churches to approve the charter for a unified church and to elect leadership in the St. Sophia Cathedral in Kiev, Ukraine, Saturday, Dec. 15, 2018. Poroshenko has told the crowd "the creation of our Church is another declaration of Ukraine's independence and you are the main participants of this historic event." (Mykhailo Markiv, Ukrainian Presidential Press Service/Pool Photo via AP)