(CNN) The Trump administration has been internally discussing how to get countries that host US troops in times of peace to pay more of the cost of keeping those troops stationed there.

The term used to sum up one specific formula under consideration is "cost plus 50." That means that the United States would work to get countries to cover the full cost of the US military presence in their country, then also pay an additional 50% of that cost. The idea is that the host country gets a certain value with having a US military presence inside their own borders, and they should pay up.

Bloomberg was the first to report on the discussions.

A central pillar of the the Trump administration's foreign policy has been burden sharing, which has meant encouraging allies to pay a greater share of investment in collective defense. The administration views this policy as a fairer approach than allowing the burden to weigh so heavily on the US government's shoulders, according to US officials familiar with the idea.

The US currently has a troop presence -- in some way, shape or form -- in more than 100 countries around the world. Some of the countries that host the highest number of US troops include Japan, South Korea, Germany, Qatar and the United Arab Emirates.

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