In addition, hundreds of migrants who have been relocated to Estonia, Latvia and Lithuania, which rank among the poorest EU countries, have since fled to Germany and other wealthier countries in the bloc.
"It needs to be said clearly and directly: This is an attack on Europe, on our culture, on our traditions." — Poland's Prime Minister Beata Szyd?o.
"I think we have a right to decide that we do not want a large number of Muslim people in our country. That is a historical experience for us." — Viktor Orbán, Prime Minister of Hungary, referring to Hungary's occupation by the Ottoman Empire from 1541 to 1699.
The European Union has initiated legal action against the Czech Republic, Hungary and Poland for failing to comply with a controversial order to take in thousands of migrants from Africa, Asia and the Middle East.
The so-called infringement procedure, which authorizes the European Commission, the powerful executive arm of the European Union, to sue member states that are considered to be in breach of their obligations under EU law, could lead to massive financial penalties.