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It's a week since the death of Omid Masoumali. The 23 year old Iranian asylum seeker set fire to himself in protest against his detention on Nauru Island and died of his injuries. A Somali woman followed suit, and remains in a critical condition. The incidents have highlighted Australia's controversial offshore immigration processing policy, and the plight of asylum seekers on Nauru and Manus Islands. It's a story that's been followed closely by Fariba Sahraei of 大象传媒 Persian as many of the detainees originate from Iran, she tells us about the impact of the latest developments in both camps on their audience.

All Aboard....the Fifth Floor's Greatest Train Journeys
In February this year the first direct cargo train travelled from China to Iran - a 10,399km journey taking 14 days, a revival of the ancient silk trade route. This grand trans-Asian enterprise prompted our journalists to share stories of their most memorable train journeys across the region - from Mongolia to Moscow, calling at Taiwan and Uzbekistan. With 大象传媒 Uzbek's Hamid Ismailov, Giang Nguyen from our Vietnamese language service, Martin Yip of 大象传媒 Chinese, and James Cowling from 大象传媒 Africa.

Kiev street art
For the past year Kiev, capital of Ukraine, has seen a boom in street art. It has been appearing on old factories, office blocks and huge apartment buildings around the city. 大象传媒 Ukrainian journalists Roman Lebed and Anastasia Soroka report.

Brazil's 'Lebanese' president-in-waiting
President Dilma Rousseff will find out next week whether she's to face an impeachment trial in Brazil. If she's suspended, Vice-President Michel Temer will take over. That's of great interest in Lebanon, the home country of Mr Temer's parents. Tariq Saleh is a Brazilian-Palestinian who reports for 大象传媒 Brasil from Beirut, and he explains why Mr Temer is such big news there.

Who are the Night Wolves?
A Russian biker gang are trying to get to Berlin in time for the 9 May Victory Day celebrations in Moscow. But they're leaving a trail of protest and controversy along the way. Who are the Night Wolves, why are they supported by President Vladimir Putin, and what do Russians make of them? Questions for Yuri Vendik of 大象传媒 Russian.

And Fifi Haroon's pick of the worldwide web.

Image:Omid Masoumali - Iranian asylum seeker who died after setting fire to himself on Nauru Island