The European Union is now banning travel to and from countries including Turkey and Saudi Arabia amid the ongoing refugee crisis, a move that the Trump administration says will be aimed at protecting Americans from terrorist threats.

The move is part of a wider effort to curb immigration, including by closing borders to refugees and those who are in transit countries, according to the State Department.

President Donald Trump signed an executive order on Monday to bar people from entering the United States from several Muslim-majority countries including Iraq, Iran, Syria, Somalia, Sudan, Libya and Yemen.

The U.S. also will suspend the resettlement of refugees in the United Kingdom, Canada, Australia and New Zealand, which has been home to a large number of refugees.

The State Department says the order will affect about 1 million refugees in these countries, who will no longer be allowed to travel to the U.K., Canada, or Australia.

U.N. chief warns Trump could close the U