MOSCOW (Reuters) - The ouster of U.S. national security adviser John Bolton is an internal affair of the United States and Moscow is not interfering in it, Interfax news agency quoted Kremlin spokesman Dmitry Peskov as saying on Tuesday.

U.S. President Donald Trump abruptly fired his national security adviser Bolton amid disagreements with his hardline aide over how to handle foreign policy challenges such as North Korea, Iran, Afghanistan and Russia.