IDOMENI, Greece—On foot or in taxis, hundreds of exhausted refugee families trying to reach central Europe flocked Tuesday to a burgeoning tent city on Greece’s border with Macedonia, which has not allowed anybody in for 24 hours citing a similar policy by Serbia further north.
Well over 7,000 — police say there could be up to 10,000 people there — mostly Syrian and Iraqi refugees are stuck at the Idomeni border crossing in deteriorating conditions.
An organized camp can take no more people, and hundreds of tents fill the fields stretching toward the border fence, which is patrolled on the Macedonian side by scores of police officers, assisted by special police forces and police from other Balkan countries.

Refugees and migrants in the northern Greek village of Idomeni approach the Greek-Macedonian border as they try to enter Macedonia on Feb. 29, 2016. AP Photo/Boris Grdanoski





