Islamic and authoritarian nations once again dominate the 2017 World Watch List of nations most hostile to Christians, and the group behind the list says persecution of believers around the world is getting worse all the time.

Compiled by the Christian organization Open Doors USA, the list of 50 nations is divided into three categories. The 10 worst nations are described as inflicting extreme persecution, the next 20 nations are accused of severe persecution, while the remaining 20 are named for moderate persecution.

Open Doors USA President and CEO David Curry told WND and Radio America a lot of factors go into the evaluation of each nation.

TRENDING: Black leaders: BLM about overthrow of U.S., not race

"What's it like for a person in their private life? What happens if they become a Christian in the family setting or the community setting? Do they lose their job? Are the police forces after them? And, of course, violence is a factor," Curry said.

"At the top of the list, you're talking about places where all of the factors are in the high level of persecution, where you have national persecution, family persecution or at the personal level. That's part of the factors. But there should be no mistake: If you're on the World Watch List, even in the top 50, there are significant issues there."

North Korea remains the worst of the worst.

"Things aren't getting better in North Korea. Things are very difficult for Christians there," he said. "It's the 16th year in a row North Korea has been at the top. In the 25 years we've done it, there are only a couple of countries that have been number one.

"In North Korea, the cultish government enforces worship of their leaders, uses the power of the government. (Christians would) be arrested and put in labor camps."

Get the hottest, most important news stories on the Internet – delivered FREE to your inbox as soon as they break! Take just 30 seconds and sign up for WND's Email News Alerts!

Shooting up the list from seventh to a very close second place is Somalia.

"In Somalia, if you're even rumored to have become a Christian, you can be executed on the spot by mob violence, by extremists," he said.

He says Islamic nations makes up 70 percent of the of the world's worst persecutors of Christians.

"Thirty-five of the top 50 countries have Islamic extremism as a factor," Curry said. "It's something we've continued to see. What's different this year is the spread into sub-Saharan Africa, the growth of the extremist movement's infrastructure, the spreading of technical expertise into some of these countries. It does not portend well into the future."

Listen to the WND/Radio America interview with David Curry:

Curry said even Islamic nations that have dropped on the list like Eritrea and Saudi Arabia are only looking better because other countries are getting worse.

"You have countries like Eritrea, which is the government using Shariah law. They're No. 10 on the list. Very difficult for Christians. Saudi Arabia is on the list at 14. They have total control, through the kingdom, of religious faith. People aren't allowed to decide for themselves what they want to do. They can't go to church. They can't have a Bible. There's not a lot of violence in Saudi Arabia against Christians, largely because there aren't many," Curry said.

Turkey jumps eight spots in the World Watch List to No. 37 after a year of political and terrorist turmoil.

"Extremism seems to be growing there. The government is going to use it's force against Christian churches. That would add another layer of complexity," Curry said.

A smaller number of nations are trying to tie the practice of religion with fidelity to the state. India, the world's largest democracy, is now up to 15th on the list.

"People are saying, 'You're not Indian if you're not an extremist Hindu.' Lots of people in India are Christian, millions and millions, and there is a rising tide of violence against them. There are groups that publicize they want to rid India of Christians by 2021. The Modi government has thus far done nothing to stop it," Curry said.

China, which was much higher on the list in past years, is now ranked at No. 39. Curry said there had been some marginal improvements there but things are looking more ominous as a result of nationalist impulses.

"Just last week, the president of China spoke out against the pope and basically said, 'We would give you freedom if you'd just be more Chinese.' They want the church to be an arm and organ of the state and to rubber stamp the cultural impact of communism. And of course the church isn't going to do that," he said.

Get the hottest, most important news stories on the Internet – delivered FREE to your inbox as soon as they break! Take just 30 seconds and sign up for WND's Email News Alerts!

Only two nations in the Western Hemisphere make the list, Mexico (No. 41) and Colombia (No. 50). Curry said believers there face a different problem than autocratic governments and radical Islamic groups.

"When people are living their faith, they'll speak out against organized crime. That's happened in Mexico. It's happening in Colombia. As such, the cartels strike out," he said.

"In one part of Mexico, a dozen pastors – maybe more – were executed for their faith when they spoke out against drug cartels," Curry said. "Yes, you're free to choose your faith in Mexico. But when you stand up for what Jesus is talking about, the cartels and organized crime will sometimes strike out against you."

While the trends are bleak, there are some encouraging signs. Azerbaijan dropped off the list after ranking 34th in 2016. And even though war-ravaged Syria (No. 6) is still a desperate place in many ways, Curry said there are reasons for encouragement there.

"There are some hopeful signs," he said. "One of them is the vibrancy of the church in Syria that remains and the growth of the church in the Middle East, the new branches of Christianity from people who are coming to know faith personally through the tragedy of what's happened through the Islamic State."

As part of the roll-out for the World Watch List, Curry said Open Doors USA met with members of the incoming Trump administration to implore them to make religious liberty a priority around the world.

"What we've encouraged them to do is take action in the first 90 days to appoint the right people at the State Department and other parts of government, to make sure that the U.S. government is using it's policies to support the basic human right of religious freedom," Curry said.

But he said churches and individual believers also have a role to play.

"Every church in America should be praying through this list on Sunday morning and being heard. If millions of Christians wrote letters and let people know they cared about this, the policymakers would certainly move," said Curry, who notes that Open Doors USA has resources available to help guide correspondence with elected leaders.