Climate change is causing drought conditions that are making the Panama Canal harder to operate and more expensive to pass through.

In an interview, Panama’s president said Trump’s threat won’t push him into the arms of China, Venezuela. Is it true?

Trump has criticized Panama over increasing fees, warning that if it doesn't change, he will demand the canal's return to the U.S.

The U.S. acquired the rights to build and operate the canal in the early 20th century, but at the time, Panama was in the process of seceding from Colombia, whose senate was refusing to ratify a treaty that would allow the canal to be built, according to the State Department's Office of the Historian .