US plans to withdraw a third of fighter jets and warships from NATO operations in Europe

The decision will limit NATO's ability to conduct long-range attacks and surveillance, among other things, and was reportedly communicated in writing in early June, according to sources. The newspaper has partially reviewed the documents.

For example, the F-16 and F-15E fighter jets will be reduced from 150 to 100 aircraft on European soil.

It is the clearest picture yet of how President Donald Trump plans to reduce the United States' involvement in the NATO defense alliance.

The Pentagon has not provided a timetable for the withdrawal, but according to US officials, it will happen very soon.