Nigeria, Dec. 22 -- The United States President, Donald Trump, has recalled nearly 30 career diplomats from ambassadorial and other senior embassy postings, including Nigeria, in a move aimed at reshaping Washington's diplomatic posture in line with his "America First" priorities.

The ambassadorial recalls were first reported by Politico and have reportedly sparked concern among some US lawmakers and the union representing American diplomats.

Two State Department officials who spoke to the Associated Press on condition of anonymity said the chiefs of mission in at least 29 countries were informed last week that their tenures would end in January.

Africa is the most affected continent, with ambassadors from 15 countries recalled. They i...