Two world leaders - two different approaches.
May of the UK flattering Trump. Nieto of Mexico cancelling a trip to the US.
Both extremes could well be foolhardy.
What will work?
Supporting democratic opposition in the US through a polite but strong resistance to supporting crazy Trump schemes.
Chretien did not support the Iraq war and Canada suffered few consequences.
Trudeau cannot sign on to any crazy Trump schemes. He need not disparage him in public though.
Clark is a politician and politicians are supposed to be political - not blurt out the first thing that comes to her mind. In doing that, she is acting like Trump.