Trump warns U.S. allies to take back captured ISIS fighters

President Donald Trump has warned that Islamic State fighters held by U.S.-backed forces could be released to Europe if their home countries fail to take them back.
His comments raise the pressure on European powers who have been reluctant to repatriate nationals accused of fighting for ISIS due to security concerns and the difficulty of obtaining sufficient evidence for prosecution.
“We have thousands of ISIS fighters that we want Europe to take, and let’s see if they tak