The current migration crisis threatens to turn into a humanitarian one, with the build-up of thousands of migrants and refugees close to Greece’s northern border, as other countries shut their borders to stop the flow of people fleeing war and poverty in Syria, North of Africa and elsewhere. The European Council is preparing for a special meeting with Turkey on migration, with the crisis posing significant challenges for the integrity of the Schengen free-travel area. This note offers links to a series of recent commentaries and studies on migration from major international think tanks and research institutes. More papers on the same topic can be found in a previous edition of ‘What Think Tanks are thinking’, published last December. Recent studies on the Schengen area can be found in another edition of ‘What Think Tanks are thinking’.