Steve Hansen has laid down the challenge to the All Blacks' rivals heading to the World Cup, questioning whether some of the newer top nations are ready to handle the pressure of expectation.

Hansen and selectors announced the 31‑man squad heading to Japan to defend the Webb Ellis Cup next month at Eden Park today.

Hansen said that challenge will lead to a scrutiny, expectation and pressure but he and the squad is looking forward to tackling all those feelings "head on".

He then questioned whether other top countries will be able to do the same.

Hansen says they are fortunate enough to live in an environment with the All Blacks where that expectation is with them all the time.

He says not only are the All Blacks expected to win Test matches every time they play, but by big margins and they  believe that'll give them an advantage.

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