The migrant crisis is the latest example of the fraught, tangled relationship. Europe wants Turkey as a buffer that blocks spillover from Middle East chaos. Turkey wants access to Europe's markets.
The European Union and Turkey have reached agreement on a plan aimed at stemming the massive flow of people into Europe. It likely will impact the fates of tens of thousands of migrants and refugees.
Turkish warplanes are conducting airstrikes against Kurdish targets in Northern Iraq, following a deadly car bomb that killed at least 37 people in Turkey's capital, Ankara.
A summit in Brussels has ended with participants saying they are closer to an agreement. The EU has been seeking more help from Turkey to cut the flow of migrants. Turkey wants EU membership and cash.
The Syrian nationals were both sentenced to four years in prison for human trafficking, but they were found not guilty of causing the deaths of 3-year-old Alan Kurdi and four others last fall.
A court in Istanbul has ordered the Zaman newspaper, one of the few remaining opposition media outlets, to replace its leadership with court appointees.
The Free Syrian Army was a key player in the early days of the uprising against President Bashar al-Assad. But many members are now feeling lost in a war that's become a morass of factions.
Recent fighting in northern Syria has been pushing more and more civilians to seek shelter elsewhere. But neighboring Turkey, already burdened with 2.6 million refugees, has locked down its border.