Donald Trump's unprecedented overhaul of the diplomatic corps will undermine U.S. ability to defend and promote its interests abroad, critics say.

In a letter to Mexico’s president, Claudia Sheinbaum, Mr. Trump said that Mexico was not doing enough to curb the flow of fentanyl into the United States and cited that as the reason for the tariffs. Mr. Trump added that Mexican companies were welcome to manufacture their products in the United States to avoid the tariffs.

KUALA LUMPUR, Malaysia (AP) — The State Department is firing more than 1,300 employees on Friday in line with a dramatic reorganization plan initiated by the Trump administration earlier this year.

The State Department is sending formal layoff notices to 1,107 civil service employees and 246 foreign service officers with domestic assignments, according to internal department communication reviewed by ABC News.

Secretary of State Marco Rubio’s plan to downsize a “bloated” department had been on hold after a court ruling.

Secretary of State Marco Rubio met counterparts in Southeast Asia during his first visit to the region since taking office.

Secretary of State Marco Rubio began mass firings at the State Department on Monday, part of a reorganization plan to form a leaner foreign policy force that, he argues, will allow the United

The State Department is firing more than 1,300 people on Friday as part of a dramatic overhaul of the agency, according to an internal notice seen by CNN.

The State Department has formally advised staffers that it will be sending layoff notices to some of them soon.

US Secretary of State Marco Rubio met his Chinese counterpart, Wang Yi, on the sidelines of an ASEAN meeting. The United States and China disagree on various issues, including trade, Taiwan and Russia's war in Ukraine.

In connection with the departmental reorganization … the department is streamlining domestic operations to focus on diplomatic priorities.”

There is a possiblity that the President of the United States, Donald Trump, will attend the 47th ASEAN Summit in Kuala Lumpur this October, according to US Secretary of State Marco Rubio. He said discussions on the matter were underway to finalise the date for the ASEAN-US Special Summit,