On December 7, 1956, The Philippines was elected to the eleven-nation United Nations Security Council (UNSC). President Ramon Magsaysay on the following day, designated Ambassador Carlos P. Romulo as Philippine representative on the Council.

Significant Events in December in Filipino History
On December 7, 1972, Carlito Dimahilig attempted to assassinate the First Lady, Mrs. Imelda Romualdez Marcos when she was attending an awards ceremony in Manila which was part of her National Beautification and Cleanliness contest.
On December 8, 1667, Don Miguel de Poblete, archbishop of Manila, died. His death was mourned by all of the city. Poblete acted as a loving father and pastor of his church. He was a very amiable, pious, and possessed with great charity. He gave liberal alms which he took from his own sustenance.
On December 8, 1972, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) was officially established through Presidential Decree No. 78. This marked a significant milestone in the country's efforts to enhance its meteorological, astronomical, and geophysical services.
On early morning of December 9, 1964, Senator Eulogio Rodriguez passed away in his sleep, around a month before his 82nd birthday. He was the president of the Nacionalista Party at the time of his death and was one of the longest-serving senators of the country.
On the cold, gray afternoon of , inside the gilded halls of the French Ministry of Foreign Affairs on the Quai d'Orsay, the map of the world was redrawn. Representatives from the United States and the Kingdom of Spain gathered to sign a document that would formally end the Spanish-American War. For Spain, the moment marked the final, agonizing breath of a global empire that had stood for four centuries. For the United States, it was the debut of a new imperial identity.