US Assistant Secretary of State Victoria Nuland has toured the overcrowded refugee camp at the Idomeni crossing on Greece's northern border with the Former Yugoslav Republic of Macedonia (FYROM).
Nuland met Thursday with local government officials and representatives of non-governmental organizations to discuss living conditions at the site.
About 14,000 people are camped in the mud at Idomeni, or housed in an overflowing official camp, hoping that FYROM will allow them to continue their trek north to central Europe.
Greek authorities have urged the refugees to move to other organized shelters in northern Greece, as there is no immediate prospect of the border reopening.
Nuland also visited the FYROM side of the crossing, speaking to officials there and police personnel from Slovenia, Serbia and other countries helping FYROM patrol its border.