President Donald Trump posted threats against Colombia on his social media platform on Sunday after two U.S. military flights carrying undocumented immigrants were not allowed to land there. It was not immediately clear if all of the passengers were Colombian citizens.

Trump also said he had ordered his administration to place an emergency 25% tariff on goods coming into the United States from Colombia, while threatening to raise it in a week to 50%.

Additionally, Trump said his administration would issue a travel ban and immediately revoke the visas of Colombian government officials -- and those of all of the country's allies and supporters. The U.S. president further threatened to issue visa sanctions on all party members, family members and supporters of the Colombian government, and he said that he would enhance Customs and Border Protection Inspections of all Colombian nationals and Colombian cargo.

A U.S. defense official told ABC News that Colombia had granted the transport aircraft diplomatic clearances. When the planes were already on their way, Colombia said they would not be allowed to land, the defense official said.

Shortly after the social media post went up, Colombian President Gustavo Petro said that he would send his personal plane to retrieve his citizens from the U.S. He also stated that he would reciprocate tariffs imposed by the U.S.

Trump and Prime Minister Keir Starmer of the United Kingdom talked Sunday about the release of Israeli-British national Emily Damari from Hamas and how to promote a "fair bilateral economic relationship" between the two countries, according to the White House.

A Downing Street spokesperson said Starmer paid tribute to Trump’s role in securing the ceasefire and hostages deal in Gaza and “They also discussed trade and the economy, with the Prime Minister setting out how we are deregulating to boost growth.

“President Trump opened by sending his condolences to the Prime Minister on the loss of his brother. The Prime Minister thanked President Trump for his kind words and congratulated him on his inauguration,” the spokesperson said.

-ABC News' Hannah Demissie and Rashid Haddou

In a post on X thus morning, Secretary of State Marco Rubio announced that Belarus “just unilaterally released an innocent American, ANASTASSIA Nuhfer, who was taken under JOE BIDEN!”

Rubio credited Trump and Chris Welby Smith, the State Department’s deputy assistant secretary for Eastern Europe, for the release.

Nuhfer was detained in early December 2024 and visited by a consular officer about three weeks ago, a State Department spokesperson said.

-ABC News' Shannon Kingston

Acting Deputy Attorney General Emil Bove, the top Trump appointee in the Justice Department, is currently in Chicago to “personally observe DHS immigration enforcement operations and support the efforts of FBI, DEA, ATF, USMS, and federal prosecutors who are assisting DHS in this critical mission,” a DOJ spokesperson told ABC News.

The department declined to provide any additional details about Bove’s precise location or the planned “enforcement operations” he will be overseeing.

His presence on the ground, however, further highlights how the Trump administration plans to involve the highest level officials at DOJ as part of its broader show of force on immigration enforcement.

Immigrations and Customs Enforcement said in a statement Sunday that it, "along with federal partners, including the FBI, ATF, DEA, CBP and the U.S. Marshals Service, began conducting enhanced targeted operations today in Chicago to enforce U.S. immigration law and preserve public safety and national security by keeping potentially dangerous criminal aliens out of our communities."

-ABC News' Alexander Mallin