Germany's Gabriel says communications with Turkey must remain open

ATHENS (Reuters) – Communication channels between the European Union and Turkey must remain open, Germany’s foreign minister said on Thursday in an escalating row over campaigning by Turkish politicians in Europe.
Turkey has been embroiled in a dispute with Germany and the Netherlands over campaign appearances by Turkish officials seeking to drum up support for an April 16 referendum that could boost Turkish President Tayyip Erdogan’s powers.
“Turkey certainly isn’