Good Morning Australia!! - A car bomb strikes a military target in Turkey's capital - A cache of radioactive material has gone missing in Iraq - What does it take to peeve a Pope? - And more in your CareerSpot Global News Briefs:

A car bomb went off next to a military building in Turkey's capital Ankara, killing at least 28 people and wounding scores more.  Although the blast seemed to be targeted at a column of military trucks as they passed by, several civilians were among the victims.  Deputy Prime Minister Bekir Bozdag called it an "act of terrorism".  There was no immediate claim of responsibility, and the assignment of blame could be subject to Turkey's increasingly caustic and deadly internal politics, as well as frayed international relations.  At least four terrorist attacks since last summer are attributed to Islamic State, but some security sources are seeking to blame Kurdish separatists, upon whom Turkey has been stepping up attacks within and over its borders.

Iraq is searching for radioactive material stolen from a Turkish energy company last year, over fears it could be used in the construction of a "dirty bomb".  The material is Iridium-192, an isotope used to test for flaws in materials used for oil and gas pipelines in a process called industrial gamma radiography.  It was stored in a case about the size of a laptop computer that was kept in a storage facility near the southern city of Basra which belongs to the US oilfield services company Weatherford.  The stuff went missing on 30 November, and the search for it became public because the Reuters news agency obtained an Iraqi government document with the details.

Aid convoys with food and medicine have reached five besieged towns in Syria, according to the United Nations.  Several residents in these towns have already starved to death, especially in the rebel-held Damascus suburb of Madaya, where prior convoys failed to meet all demands.  This time around, the Syrian Arab red Crescent and the UN trucks are hauling wheat and special high-energy foods designed to deal with the starvation crisis.  The aid convoys are hoped to eventually reach seven town that are cut off by either rebels, Islamic State, or the Syrian government itself.

Pope Francis is visiting Mexico, where he got a little hot under the collar after an overly enthusiastic follower pulled him over another man in a wheelchair.  

Colombia's national police chief has resigned amid allegations of running a gay prostitution ring within the police service.  This comes a day after the country's prosecutor general opened a formal investigation into allegations that young male police cadets were cajoled and threatened into having sex with higher-ranking officers.  General Rodolfo Palomino asked to be allowed to retire and maintains he is innocent.  Authorities are also probing Palomino for alleged illicit enrichment and conducting illegal wiretaps.

Investigators raided the headquarters of France's far-right Front National party as part of an EU fraud investigation, as well as searching the homes of the FN's founder Jean-Marie Le Pen and a deputy.  There are questions over whether the FN has misused EU money allocated exclusively for MEPs' assistants at the European Parliament in Strasbourg to pay general staff salaries.  The FN denies wrongdoing.

Pennsylvania firefighters rescued a dog from a sinkhole.  The winner of the 140th Westminster Kennel Club dog show in New York City, German shorthaired pointer CJ, visited the top of the Empire State Building with his "Best in Show" award.