David Miliband: Migrant crisis amid European 'breakdown'
This week has brought more grim headlines in the migrant crisis, as people from the Middle East and Africa flee to Europe by land and sea.
Hungarian police say they have arrested four people over the discovery of the bodies of 71 migrants, thought to be Syrian, in a lorry in Austria. The victims included 59 men, eight women and four children who are thought to have been dead for about two days.
And 200 people are feared dead after two boats carrying migrants capsized off the coast of Libya. The UN says more than 300,000 migrants have now tried to cross the Mediterranean this year - more than in all of 2014.
David Miliband, President and CEO of the International Rescue Committee, told the BBC's Jane O'Brien that the crisis needs to be dealt with both at the source, with conflicts in countries like Syria that are causing people to leave, and by better cooperation between European countries to deal with the migrants that arrive.