Europe's free travel will end unless Turkey halts migrant flow, officials say

``Europe's cherished free-travel zone will shut down unless Turkey acts to cut the number of migrants heading north through Greece by March 7, European Union officials said on Thursday. ... Seven European states have already restored border controls within the creaking Schengen passport-free zone. More said they would unilaterally tighten border controls unless a deal with Turkey shows results before the two March summits.''