Hello Australia!! - Joe Hockey ends almost two decades in parliament - Canada's new government will make a major change in its military commitments - The US and Russia sign an agreement to keep from killing each other - And more in your CareerSpot World News Briefs:

Former treasurer Joe Hockey gave a tearful farewell speech, warning that the federal government's ability to implement policy had been undermined by "the revolving door in Australian politics".  Hockey spent 19 years in Parliament, but Australia has had five Prime Ministers in five years, and four treasurers in four years.  Meanwhile, Fairfax reports that fellow Liberals are angry with Julie Bishop for apparently snubbing Hockey's last day in parliament.  The two served together for years, but wound up on opposite sides of the leadership spill that dumped Tony Abbott for new PM Malcolm Turnbull.  Abbott was out of the country.  Hockey is expected to be Australia's next Ambassador to the US.

Canada's Prime Minister-elect confirms he will withdraw RCAF jets from the battle against Islamic State, as he promised on the campaign trail.  Justin Trudeau gave no timetable.  However, he assured US President Barack Obama that he would keep Canadian military advisers in northern Iraq, during their first telephone conversation since Trudeau's Liberal Party swept to victory in Monday's elections.  He also says Canada will take in 25,000 Syrian refugees, something rejected by outgoing conservative Prime Minister Stephen Harper.

The US and Russia signed an agreement to avoid clashes of their respective air forces over Syria.  The operational details are being kept secret at Moscow's request, but the two sides will establish a hotline to allow each command to communicate on the ground.  The US-led coalition - which includes Australia - is targeting Islamic State.  Russia also claims to be hitting IS, but is accused of attacking US-backed rebel groups fighting against Russian-supported government forces. 

Mexico is reopening the investigation into the disappearances of 43 student teachers from Iguala Town in Guerrero State.  International investigators say there were too many flaws in the government's previous report, which claimed the 43 were rounded up by cops at a protest of corruption in Iguala and handed over to the local drug gang and killed.  But the families never bought that story.  And the outside groups say the Mexican government not only downplayed the number of federal troops in the area at the time, but refused to allow troops to be interviewed.

Hours after meeting US President Barack Obama, the father of the Texas teen who was profiled and treated like a terrorist at his high school says Ahmed Mohamed is accepting a scholarship offer in Qatar and the family is leaving the United States.  The 14-year old's case went viral last month after he made an alarm clock for a class assignment, but was arrested when he brought it to school.  Critics say he was mistreated because of his race and religious background.  President Obama invited him to White House Astronomy Night, but in the end it wasn't enough to keep the kid in America.