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Fresh from the turmoil caused by the British vote to leave the EU, a new challenge to European unity has emerged. Austria's highest court has ordered a rerun of the country's presidential election, giving a right-wing Eurosceptic candidate, Norbert Hofer a second chance after he narrowly lost in May. The ruling represents a victory for the Freedom Party, which challenged the vote on claims of widespread irregularities.

Meanwhile, it's decision time for Australia.The polls have opened in the federal election which will decide who will govern the country for the next three years. Voters are hoping for a return to stability following a very volatile period of politics. There have been four Prime Ministers in the past three and a half years. And on the economic front too, there's a lot of uncertainty, with the mining boom coming to an end.

After a meeting with the British Prime Minister David Cameron, French President Francois Hollande said that Brexit cannot be "cancelled" or "delayed". Hollande spoke to reporters on the sidelines of the Battle of the Somme centenary ceremonies in northern France, saying a speedy exit for the UK would avert uncertainty and instability. But how is the outcome of the vote being interpreted in homes across France? We hear from those in the South West of the country.

Joining Susannah Streeter throughout the programme is Peter Ryan, from ABC News Australia, in Sydney.

(Picture: Alexander Van der Bellen (l) beat Norbert Hofer (r) by only 30,863 votes in the election. Credit: EPA)