President Donald Trump reportedly instructed the U.S. military to draw up plans to increase U.S. troop presence in the Panama

Potential plans range from partnering more closely with Panamanian security forces to a less likely option of U.S. troops' seizing the canal by force, U.S. officials told NBC News.

American access to the Panama Canal, one of several new directives outlined in what amounts to a major overhaul of US strategic priorities, according to a new memo that was sent to senior leaders and reviewed by CNN.

President Donald Trump has directed the Pentagon to prepare plans for carrying out his threat to "take back" the Panama Canal, including by military force if needed, two U.S. officials familiar with the situation told NBC News Thursday.

The U.S. acquired the rights to build and operate the canal in the early 20th century. In a treaty signed in 1979, during the administration of Democratic President Jimmy Carter, the U.S. agreed to turn over control of the canal to Panama at the close of 1999.

The courses of action the Trump administration has considered range from “simply ensuring that U.S. ships have safe passage through the canal” and letting Panama retain sole control of the canal as it has since late 1999 to “restoring total U.S. ownership and operation” of the waterway.

The Pentagon is reportedly exploring military options for the Panama Canal to ensure ongoing US access to the strategically important waterway, following a request from the White House.

US Southern Command has been given proposals that include collaborating with the Panamanian military - and potentially seizing the canal by force if they don't co-operate