The current stability of their joint government was only through the mediation and leadership of their mother, Julia Domna, accompanied by other senior courtiers and generals in the military. The historian Herodian asserted that the brothers decided to split the empire into two halves, but with the strong opposition of their mother, the idea was rejected, when, by the end of 211, the situation had become unbearable. Caracalla tried unsuccessfully to murder Geta during the festival of Saturnalia (17 December).
Bolívar returned to Angostura, when congress passed a law forming a greater Republic of Colombia on 17 December, making Bolívar president and Zea vice president, with Francisco de Paula Santander vice president on the New Granada side, and Juan Germán Roscio vice president on the Venezuela side.
Following repairs, the Wrights finally took to the air on December 17, 1903, making two flights each from level ground into a freezing headwind gusting to 27 miles per hour (43 km/h). The first flight, by Orville at 10:35 am, of 120 feet (37 m) in 12 seconds, at a speed of only 6.8 miles per hour (10.9 km/h) over the ground, was recorded in a famous photograph.
By 17 December, the rebellion had been held and broken. Some 40 rebels were dead and 3,400 captured. The remainder had fled and were assumed to be trying to reach Indonesia. Of the leaders, Azahari was in the Philippines and Yassin Affendi was with the fugitives.
Five years after his creation of the ELPV, Chávez went on to form a new secretive cell within the military, the Bolivarian Revolutionary Army-200 (EBR-200), later redesignated the Revolutionary Bolivarian Movement-200 (MBR-200).
The next day after the four U.S. military personnel incident, President Bush ordered the execution of the Panama invasion plan; the military set H-Hour as 0100 on 20 December.
On December 17, 1991, along with 28 European countries, the European Economic Community, and four non-European countries, the three Baltic Republics and nine of the twelve remaining Soviet republics signed the European Energy Charter in the Hague as sovereign states.
On December 17, 1996, O'Neal shoved Dennis Rodman of the Chicago Bulls; Rodman's teammates Scottie Pippen and Michael Jordan restrained Rodman and prevented further conflict. The Los Angeles Daily News reported that O'Neal was willing to be suspended for fighting Rodman, and O'Neal said: "It's one thing to talk tough and one thing to be tough."
On 17 December 2001, Vodafone introduced the concept of "Partner Networks", by signing TDC Mobil of Denmark. The new concept involved the introduction of Vodafone international services to the local market, without the need for investment by Vodafone.
Released in Japan on December 17, 2011 and North America on February 22, 2012, the PlayStation Vita was previously code-named Next Generation Portable (NGP). It was officially unveiled by Sony on January 27, 2011 at the PlayStation Meeting 2011.
A file containing five audio recordings of conversations between Erdoğan and his son from a 26-hour period beginning 17 December 2013, in which he appeared to be instructing his son to conceal very large amounts of money, was posted to YouTube and widely discussed on social media.
Chinese search technology company Baidu announces a $600 million strategic investment in Uber, also classified as a continuation of the Series E round, thereby bringing the Series E total to $1.8 billion.
On 17 December 2016, while stuck in traffic, Musk tweeted, am going to build a tunnel boring machine and just start digging ..., The company was named 'The Boring Company' (TBC), an American infrastructure and tunnel construction services company.
On 17 December, Messi finished third in The Best FIFA Men's Player award behind Robert Lewandowski and Cristiano Ronaldo and was included in the FIFA FIFPro World XI for the fourteenth consecutive year.