President Donald J. Trump has sent official letters to several international leaders, including the presidents of Tunisia, Serbia, Indonesia, and the chairperson of the Presidency of Bosnia and Herzegovina, as well as to the Prime Minister of Cambodia, the Chief Advisor of Bangladesh, and the King and Acting Prime Minister of Thailand. One letter to Bosnia and Herzegovina initially addressed Zeljka Cvijanovic, the chair of the presidency, incorrectly as "Mr. President." The letter was subsequently reissued with the corrected greeting "Madam President." The letters appear to be part of formal diplomatic communications from the Trump administration.