The Duchess of Cornwall is "utterly devastated" after her brother died from a serious head injury sustained in a fall in New York.
Mark Shand, 62, was taken to hospital on Tuesday night after reportedly slipping while lighting a cigarette and hitting his head on the pavement outside an after-party for a charity event.
He was in New York for an auction held at Sotheby's in aid of a charity for underprivileged children and the Elephant Family, which aims to save the endangered Asian elephant from extinction in the wild.
It was the finale for the month-long Big Egg Hunt NYC by Faberge, which saw egg sculptures, designed by well-known faces, sold to the highest bidder. The charity event raised $1.6 million (£950,000) for charity.
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A top temperature today of 13 Celsius (55F).
Mr Trump tweeted that Mr McMaster has done "an outstanding job & will always remain my friend." He said MrBolton will take over on April 9.
The committee wants a more stringent interpretation of air quality laws and for noise estimates to reflect a range of possible flight paths.