The government of Iran has taken an increasingly tougher stance on the more than two million Afghans living in the country. Last year Tehran threatened to expel the 2.4 million Afghans it hosts if Kabul signed a strategic agreement with the United States. Suffering from discrimination, more than 700 Afghans cross backing into Afghanistan each day.
Many will end up in Herat province, from there they will continue onto their home provinces. Al Jazeera's Jennifer Glasse reports from Islam Qala, Herat, on the border with Iran.