Australia's immigrant detention policy has been strongly condemned by rights groups, but the government says it is necessary to fight trafficking.
Indonesia's attorney general defended the latest executions as part of its ongoing "war" on drug trafficking.
Leaders and dignitaries from Australia, New Zealand and Turkey led thousands at dawn ceremonies on Turkey's Gallipoli peninsula on Saturday.
April 25 marks the 100th anniversary of the Gallipoli campaign -- a World War I battle that led to the deaths of over 140,000 soldiers.
Many nations, including the U.S. and China, questioned Australia's commitment to reducing emissions.
The teens were arrested on suspicion of being "associates" of an ISIS sympathizer shot dead by Melbourne police after he stabbed officers in September.
Bjorn Lomborg has made a career out of arguing that mainstream solutions to climate change are ineffective.
The news came one day after Australians deployed more than 300 military members to help train the Iraqi army to combat the growing threat there posed by ISIS.
The Australian government approved the deployment of 300 additional troops to Iraq, where they will train and assist the local military.
The highly addictive crystalline form of methamphetamine has doubled in use in the last few years.
Several people were injured as protesters clashed with counter-demonstrators. The events have attracted accusations of racism.
The privacy breach by the organizers had affected a total of 31 leaders who attended the summit last year.
The law mandates the tracking of call records, assigned IP addresses, location information and billing information, among other data.
Prime Minister Tony Abbott called ISIS a "death cult" that targets vulnerable young people.
Millions of dollars in aid are being sent to Vanuatu in the wake of Cyclone Pam.
Jake Bilardi, who died in a suicide attack in Iraq, had allegedly written a blog providing information about his plans.
While in prison, the Australian prisoner has picked up art and used it to make a personal appeal to Indonesia's president.
"If Canberra keeps doing things that displease Indonesia, Jakarta will surely let the illegal immigrants go to Australia."
"We're just looking forward to seeing him when we get over there, giving him a hug," the brother of one of the two inmates said.
Reacting to a new U.N. report, Prime Minister Tony Abbott said his country was "sick of being lectured" over its immigration policies.
Claims of the high-school dropout's recruitment, hailed by ISIS as a "major coup," had emerged on Twitter in late December.
The country's prime minister offers prayers for the missing passengers, and pledges to continue searching for the aircraft.