Trump is only making comments about blunder boy, because he don't know how to play the game.. Before the G7....all the leaders were making statements against trump's tariffs like they should. At the G7 they all shake hands and say "This tariff/trade war thing is not going to be good!", and they say they will talk and solve the problem. After the G7 blunder boy starts huffing, puffing, posturing and strutting like idiot. It will be near impossible to work things out that way.
Meanwhile as the other 5 countries are putting together trade agreement committees to negotiate with the US, our PM will run around puffing himself up till he blows a valve.