Just before this shot, I saw some large limousines and police cars outside with flashing lights, it dawned on me people from the government had come to visit the museum. There was a moment of hesitation if it would be frowned upon to take pictures, but I got a pic of these men heading towards the entrance. It seems the man in the middle with the hat who had a the smart very senior looking green uniform with a lot of badges and tassels appears to be a head of state of a visiting nation.
I have been told that if a senior member of a foreign government comes to Israel, there is a policy that they have to come to Yad Yashem at least once, to gain understanding of what many of the grim events the Jewish people have faced before they got a nation of their own again.
These flags were hung out on a street close to the King David hotel. I have seen other countries hung out here when there is visiting dignitaries coming, another time recently was the flag of Cyprus.
Not sure what nation this is, maybe a small Caribbean island I think?