Once again Mr Trump played up to the crowd to avoid being drawn on policy detail, preferring to boast how America was going to be stronger and “great again” if he’s elected president. “Our country doesn’t win any more,” he said in his closing remarks. “We don’t win on trade, we don’t win on the military, we can’t defeat ISIS, we’re not taking care of our great people, the veterans. We have to change our whole way. If I am elected president we will win again.” The other fireworks came from Marco Rubio and Ted Cruz, a contest which could move to the fore if Mr Trump’s campaign falters.