Japan: "We'd never buy foreign bonds (we might buy foreign bonds)"

Abe puts the squeeze on the BoJ.

Even Japan has limits to what it will do in a currency war. The country's finance minister, Taro Aso, has confirmed that the nation has no plans to buy foreign bonds through the Bank of Japan.

The denial is a slight walking-back of the words of the Prime Minister Shinzo Abe last night, who noted — without saying what he actually thought on the subject — that "there are views calling for foreign-bond purchases".

Abe had been discussing the recently revised inflation mandate for the Bank of Japan in parliament when opposition MPs asked him what the bank is actually planning to do to back up its target. Without confirming any particular policy route, Abe named a number of potential unconventional measures, saying that "I hope the BoJ will take effective policy steps that would contribute to overcoming deflation."

The BoJ has every motivation to fight deflation; in the same debate, Abe threatened it with a change in law, saying:

It would be necessary to proceed with revising the BOJ law if the central bank cannot produce results under its own mandate.

While Abe has, for the most part, been content to let the Bank pick its own methods so long as it results in reflation, Aso's comments this morning imply there are limits. Bloomberg's Mayumi Otsuma puts the talking-back in context:

Economy Minister Akira Amari told reporters today that Abe’s comments referred to buying foreign bonds as a general policy idea that is available to any country.

It seems likely that the skittishness of the Japanese cabinet is related to the G20's stand on currency manipulation, which was finally clarified after last week's mild confusion. The group is definitely (maybe) against currency manipulation. And while much of what Japan is doing is clearly aimed at affecting the Yen in international markets, it's also capable of being viewed as simple unconventional monetary policy aimed at having a domestic effect. Buying foreign bonds would render that charade a lot harder to pull off, and could lead to some awkward conversations in Moscow this weekend.

Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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I believe only Yvette Cooper has the breadth of support to beat Jeremy Corbyn

All the recent polling suggests Andy Burnham is losing more votes than anyone else to Jeremy Corbyn, says Diana Johnson MP.

Tom Blenkinsop MP on the New Statesman website today says he is giving his second preference to Andy Burnham as he thinks that Andy has the best chance of beating Jeremy.

This is on the basis that if Yvette goes out first all her second preferences will swing behind Andy, whereas if Andy goes out first then his second preferences, due to the broad alliance he has created behind his campaign, will all or largely switch to the other male candidate, Jeremy.

Let's take a deep breath and try and think through what will be the effect of preferential voting in the Labour leadership.

First of all, it is very difficult to know how second preferences will switch. From my telephone canvassing there is some rather interesting voting going on, but I don't accept that Tom’s analysis is correct. I have certainly picked up growing support for Yvette in recent weeks.

In fact you can argue the reverse of Tom’s analysis is true – Andy has moved further away from the centre and, as a result, his pitch to those like Tom who are supporting Liz first is now narrower. As a result, Yvette is more likely to pick up those second preferences.

Stats from the Yvette For Labour team show Yvette picking up the majority of second preferences from all candidates – from the Progress wing supporting Liz to the softer left fans of Jeremy – and Andy's supporters too. Their figures show many undecideds opting for Yvette as their first preference, as well as others choosing to switch their first preference to Yvette from one of the other candidates. It's for this reason I still believe only Yvette has the breadth of support to beat Jeremy and then to go on to win in 2020.

It's interesting that Andy has not been willing to make it clear that second preferences should go to Yvette or Liz. Yvette has been very clear that she would encourage second preferences to be for Andy or Liz.

Having watched Andy on Sky's Murnaghan show this morning, he categorically states that Labour will not get beyond first base with the electorate at a general election if we are not economically credible and that fundamentally Jeremy's economic plans do not add up. So, I am unsure why Andy is so unwilling to be clear on second preferences.

All the recent polling suggests Andy is losing more votes than anyone else to Jeremy. He trails fourth in London – where a huge proportion of our electorate is based.

So I would urge Tom to reflect more widely on who is best placed to provide the strongest opposition to the Tories, appeal to the widest group of voters and reach out to the communities we need to win back. I believe that this has to be Yvette.

The Newsnight focus group a few days ago showed that Yvette is best placed to win back those former Labour voters we will need in 2020.

Labour will pay a massive price if we ignore this.

Diana Johnson is the Labour MP for Hull North.