European mass migration crisis

In this photo taken Thursday Sept. 26, 2019 supporters of Poland's ruling right-wing party are standing in line before a candidate's billboard to get to a party convention in Warsaw, Poland, ahead of Sunday parliamentary election in which the Law and Justice party is hoping to win a second term in power. (AP Photo/Czarek Sokolowski)

FILE - This undated portrait attributed to Rodolfo Ghirlandaia shows Italian explorer Christopher Columbus. The image and story of the 15th Century navigator who began European incursions into the Americas, have changed in the U.S. over decades. Following his three voyages, Columbus fell into obscurity for centuries until his adventures were revitalized in the 1800s. Columbus became a symbol for Italian and Irish immigrants in the U.S. who used his story to fight anti-Catholic bigotry and discrimination. They created annual Columbus Day to honor the explorer but also pay homage to Italian American heritage. By 1992, the 500th anniversary of Columbus' landing in the Americas, a new generation of Native American activists began protesting the navigator and blaming him for launching centuries of indigenous genocide. (AP Photo)

Turkey's President Recep Tayyip Erdogan speaks to his ruling party officials, in Ankara, Turkey, Thursday, Oct. 10, 2019. Erdogan says that there have been 109 "terrorists killed" — a reference to Syrian Kurdish fighters — since Ankara launched an offensive into Syria the previous day. Erdogan also warned the European Union not to call Ankara's incursion into Syria an 'invasion,' and renewed his threat of letting Syrian refugees flood Europe. (Turkish Presidency Press Service via AP, Pool)

People help a wounded boy as they take cover after mortars fired from Syria, in Akcakale, Turkey, Thursday, Oct. 10, 2019. An Associated Press journalist said at least two government buildings were hit by the mortars in Sanliurfa province's border town of Akcakale and at least two people were wounded. (Ismail Coskun/HA via AP )

Syrians flee shelling by Turkish forces in Ras al Ayn, northeast Syria, Wednesday, Oct. 9, 2019. Turkish President Recep Tayyip Erdogan announced Wednesday the start of a Turkish military operation against Kurdish fighters in northeastern Syria. (AP Photo/Baderkhan Ahmad)

A person with a flag of Israel stands next to flowers and candles in front of a synagogue in Halle, Germany, Thursday, Oct. 10, 2019. A heavily armed assailant ranting about Jews tried to force his way into a synagogue in Germany on Yom Kippur, Judaism's holiest day, then shot two people to death nearby in an attack Wednesday that was livestreamed on a popular gaming site. (AP Photo/Jens Meyer)

FILE -- In this Dec. 28, 2017 photo a sculpture with the Name 'Mia' and the word 'Why?' written on it is pictured in Kandel, Germany. German prosecutors say an Afghan migrant who was convicted of murdering his 15-year-old German girlfriend has been found dead in his cell after apparently hanging himself. (Andreas Arnold/dpa via AP, file)

In this photo taken from the Turkish side of the border between Turkey and Syria, in Akcakale, Sanliurfa province, southeastern Turkey, smoke billows from a fire inside Syria during bombardment by Turkish forces Wednesday, Oct. 9, 2019. Turkey launched a military operation Wednesday against Kurdish fighters in northeastern Syria after U.S. forces pulled back from the area, with a series of airstrikes hitting a town on Syria's northern border.(AP Photo/Lefteris Pitarakis)