Newly inaugurated U.S. President Donald Trump is pushing to "take back" the Panama Canal, the world's second busiest interoceanic waterway.

Panama is inching closer to China, Trump's new Federal Maritime Commission head Louis Sola tells CNBC, and 'all options on the table' to defend U.S. business.

In recent weeks, when he was President-elect Donald Trump publicly said that Panama should return the Panama Canal to the United States, and he would not rule out using military force to reclaim it. At his presidential Inauguration on Monday Trump doubled down on saying that his new administration was going to take back the canal.

Secretary of State Marco Rubio said on Thursday he had "zero doubt" that China has a contingency plan to shut down the Panama Canal in the event of a conflict with the U.S. and that Washington intends to address what it sees as a national security threat.

Secretary of State Marco Rubio says President Donald Trump’s desire to acquire Greenland and retake control of the Panama Canal is driven by legitimate national security interests stemming from growing concerns about Chinese activity and influence in the Arctic and in Latin America.

More than 100 years after the construction of the engineering marvel that linked the Atlantic and Pacific oceans — and 25 years after the canal was returned to Panama by the US — the Panama Canal faces renewed intimidation from US President Donald Trump.

During Monday’s inauguration, Donald Trump repeated his threat to retake the Panama Canal. The United States controlled the waterway since the early 20th century, but in 1977 President Jimmy Carter signed a landmark treaty to give Panama control of the canal.

U.S. President Donald Trump’s insistence that he wants to have the Panama Canal back under U.S. control is feeding nationalist sentiment and worry in Panama, home to the critical trade route and a country familiar with U.

Russia warned President Trump on Tuesday against seizing the Panama Canal, after he reiterated his intent to take control of the strategic waterway in his second inaugural address Monday.

PANAMA CITY (Reuters) -Panamanian President Jose Raul Mulino on Thursday ruled out discussing control over the Panama Canal in a meeting with U.S. Secretary of State Marco Rubio, who is set to visit the Central American country in his first official trip abroad this weekend.