A new prime minister's first meetings with the leaders of other countries carry high national interest. The leaders are usually as dominant in their governments as a prime minister is in ours.
They do not solely decide its policies and direction but they set its tone, style and usually the pace, especially in foreign affairs. The impression the Prime Minister can make on them will strongly influence their view of New Zealand and the character of its new Government.
In Europe this week Jacinda Ardern has met three leaders who are playing pivotal roles in European and global affairs. France's President Emmanuel Macron, Germany's Chancellor Angela Merkel and Britain's Prime Minister Theresa May are all grappling with the implications of Brexit and the Trump presidency for their economies, their trade and their security.
They will have noted the Ardern Government's hesitation to expel Russian spies in sympathy with Britain and to support the US, British and French reprisals on Syria's regime for its suspect use of a chemical weapon.
Neither of these differences appeared to harm Ardern's reception at the Elysee Palace, the Federal Chancellery or Downing St. Macron's background in the French Socialist Party would have given them a rapport, along with their generational identity, which Macron invoked on the subject of trade.