Saudi Arabia faces questions of accountability as it feels the pressures of war and falling oil prices.

Nothing less than a multifaceted strategy is required to address both the political causes and the military symptoms of the rise of Isis, writes Robert Patman.

Imagine being David Cameron's public relations adviser, writes Paul Thomas. "How did this come about, according to the book? I mean, was it a dare? Did he trip?"

Political parties - especially those that position themselves to the left of centre - in countries like ours will watch with interest what happens to the British Labour Party's new leader.

Hillary Clinton has begun an effort to convince voters that she is "fun" and a "real person".

Australia's new Prime Minister has received a boost from a respected opinion poll, but the fallout lingers from a bitter party battle as the leader he ousted attacked the credibility of his new....

Three months ago it was all just a big joke. Donald Trump? Get out! Surely The Apprentice can't be rating that badly?

The election of Jeremy Corbyn as Labour leader in Britain has exposed a fatal flaw in left-wing thinking.

Turnbull's coup against Abbott this week proves that while modern prime ministers still survive or perish based on the support of their colleagues.

A narcissistic blowhard leads the Republican presidential race. Australia goes through PMs like a banana republic on fast-forward. What's going on?

Today, for millions of people, the difference between living in war or peace, between prosperity and starvation, between self-determination and oppression, are determined purely by geography and borders.

"Leftwards" is often used to mean not only "extreme" and "unrealistic" but "backward-looking" as well, writes Bryan Gould.

Things have changed, and the Kiwi PM is showing the way. So just ask yourself, what would John Howard do?

Malcolm Turnbull has flagged there will be more women in senior positions of his Government.

"You could drop a nuclear bomb on this Parliament and Julie Bishop would crawl out as deputy leader."

Pity the Australians - they have been watching Prime Ministers fail for too long. Leadership coups provide compelling drama but they should not happen when a party is in power.

Rich and famous, combative and ambitious, Malcolm Turnbull has lived a life full of glittering success.

Labour leader Andrew Little says he pities Australia if its new Prime Minister, Malcolm Turnbull, wants to be like New Zealand Prime Minister John Key.

Labour leader Andrew Little takes swipe at Australia's new Prime Minister for praising John Key.

Tony Abbott's critics claim to have seen his topple from power coming, with many directly linking his political demise to a series of slip-ups.

Facing an unstaunchable flood of migrants and refugees, Germany yesterday said it was reaching breaking point and would enact emergency controls.

It's been a long time coming, but the soap opera of Tony Abbott's prime ministership has come to an end. Plus, the best Twitter reactions.

Malcolm Turnbull is the new Liberal Party leader and Prime Minister of Australia after winning a leadership spill tonight 54 votes to 44.

There is nothing nobel or brave about unworkable polices and promises that will never be delivered. There is only defeat, writes Josie Pagani.

Corbyn's rise echoes that of another senior-citizen socialist who has come out of nowhere this year to rattle his party's centre-left establishment.

Jeremy Corbyn will shake up British politics and represents a reaction against the legacy of former Prime Minister Tony Blair, Labour leader Andrew Little says.