What a varied bunch emerging markets have become. At last week’s monetary policy meetings, we saw one rate rise (Serbia) and differing messages from the rest. Mexico turned dovish while hitherto dovish Brazilian central bank finally mentioned the inflation problem. Russia meanwhile kept markets guessing, signalling it could either raise rates next month or cut them.

This week, a cut looks likely in Turkey while South Africa and the Philippines will almost certainly keep interest rates steady.

(corrects name of hedge fund in para 3 to Symphony Financial Partners)

Any doubt about the importance of a weaker yen in thawing the frozen Japanese economy will have been dispelled by the Nikkei’s surge to 32-month highs this week. Since early December, when it became clear an incoming Shinzo Abe administration would do its best to weaken the yen, the equity index has surged as the yen has fallen.

Those moves are giving sleepless nights to Japan’s neighbours who are watching their own currencies appreciate versus the yen. South Korean companies, in particular, from auto to electronics manufacturers, must be especially worried. They had a fine time in recent years  as the yen’s strength since 2008 allowed them to gain market share overseas. But since mid-2012, the won has appreciated 22 percent versus the yen.  In this period, MSCI Korea has lagged the performance of MSCI Japan by 20 percent. Check out the following graphic from my colleague Vincent Flasseur (@ReutersFlasseur)

When will Brazil’s central bank admit it has an inflation problem? Markets will be watching today’s rate-setting meeting for clues.

There is no doubt about the outcome of today’s meeting at the Banco Central do Brasil (BCB) — no one expects it to do anything but leave interest rates steady at the current 7.25 percent. But the BCB has been focused on growth for 18 months and has cut interest rates by 525 basis points in this time, its actions helping to drive the real 10 percent lower last year versus the dollar. The government meanwhile has unleashed huge doses of fiscal stimulus. The result, rather than a growth recovery, is a steady rise in inflation.

Indonesia has just given the go-ahead for another leg down in the rupiah. It has cut its forecasts for the exchange rate to 9,700 per dollar compared to the 9,200 level at which the central bank used to step in. The currency has duly weakened and nervous foreigners have rushed to hedge exposure — 3-month NDFs price the rupiah at almost 10,000 to the dollar. The  rupiah last week hit a three-year low, its weakness coming on top of a dismal 2012 which saw it fall 6 percent as the current account deficit worsened. Traders in Jakarta are reporting dollar hoarding by exporters.

All that is spooking foreigners who own more than 30 percent of the domestic bond market. The currency weakness hit them hard last year as Indonesian bonds returned just 6 percent, a third of the sector’s 16 percent average (see graphic).

Emerging bonds have got off to a flying start in 2013, with debt funds taking in over $2 billion this past week, the second highest weekly inflow ever, according to fund tracker EPFR Global. Issuance is strong -  Turkey for instance this week borrowed cash repayable in 10 years for just 3.47 percent, its lowest yield ever in the dollar market.

Yet not everyone is optimistic and most analysts see last year’s returns of 16-18 percent EM debt returns as out of reach. The consensus instead seems to be for 5-8 percent as  tight spreads and low yields leave little room for further rallies — average yields on the EMBI Global sovereign debt index is just 4.4 percent.    Domestic bonds meanwhile could suffer if inflation turns problematic. (see here for our story on emerging bond sales and returns).

Could Asia be headed for a debt crisis?

The very thought may seem ludicrous given the region’s mighty current account surpluses and brimming central bank coffers.  But a note from RBS analysts Drew Brick and Rob Ryan raises some interesting concerns.

Historically speaking, most EM crises have been borne on the back of excessive capital inflows, Brick and Ryan write. And in many Asian countries, the consequence of these flows has been over-easy monetary policy that has left citizens and companies addicted to cheap money. Personal and corporate indebtedness levels have spiralled even higher in the past five years as governments across the continent responded to the 2008 credit crunch by unleashing billions of dollars in stimulus.