MOSCOW (AP) — Russian President Vladimir Putin said Thursday he will sign a controversial bill barring Americans from adopting Russian children, as the Kremlin’s children’s rights advocate recommended extending the ban to the rest of the world.

The bill is part of the country’s increasingly confrontational stance with the West and has angered some Russians who argue it victimizes kids to make a political point.

The law would block dozens of Russian children now in the process of being adopted by American families from leaving the country and cut off a major route out of often dismal orphanages. Russia is the single biggest source of adopted children in the U.S., with more than 60,000 Russian children being taken in by Americans over the past two decades.