THE HAGUE , NETHERLANDS - JULY 23:  A Dutch flag flies at half mast at the future residence of King Willem-Alexander Royal Palace Huis ten Bosch as the Dutch government declares a national day of mourning to commemorate the victims of Malaysian Airlines flight MH17, on July 23, 2014 in The Hague, Netherlands.  Flight MH17 was travelling from Amsterdam to Kuala Lumpur when it crashed killing all 298 on board including 80 children. The aircraft was allegedly shot down by a missile and investigations continue over the perpetrators of the attack.  (Photo by Robin Utrecht Photography/Getty Images)