The White House is reportedly planning to replace National Security Adviser H.R. McMaster. McMaster reportedly threatened to quit in front of his staff and voiced frustration at White House officials. President Donald Trump is believed to have berated McMaster on several occasions, including one instance during which he complained McMaster droned on during meetings. As reports Thursday painted national security adviser H.R. McMaster on the verge of a potential White House departure, a more fuller picture emerged of McMaster's tenure, a rocky one that at least one point made him threaten to quit.

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