Cross border exposures (BIS data)

2013
Highlights of the BIS international statistics (BIS, pdf, 8 pages, March 2013)
BIS Quarterly Review March 2013: International banking and financial market developments (BIS, pdf, 85 pages, March 2013)

2012
Highlights of the BIS international statistics (BIS, pdf, 10 pages, March 2012)
BIS Quarterly Review March 2012 International banking and financial market developments (BIS, pdf, 63 pages, March 2012)

Foreign Banks' Exposure to Spanish Banks (haver.com, Jun 4th 2012)

2011
Highlights of the BIS international statistics (BIS, pdf, 14 pages, March 2011)
BIS Quarterly Review March 2011: International banking and financial market developments (BIS, pdf, 79 pages, March 2011)

2010
Highlights of international banking and financial market activity (BIS, pdf, 12 pages, March 2010)

BIS Quarterly Review March 2010: International banking and financial market developments (BIS, pdf, 72 pages, March 2010)

[update]
NL > Spain

ING has 41bn € in Spain (blikopdebeurs.com, May 22nd 2010)(Dutch)
(pie chart: yellow=sovereign bonds, blue=mortgages, grey=real estate, light blue=banks, red=RMBS and other)
CPB Financial Stability Report (CPB, May 30th 2012)

Banks                 >Spain 1q 2012: 70.85bn€=92.105bn$ /4th q 2011: 73.16bn€=95.108bn$
Pension funds> Spain 1q 2012:    9.43bn€=12.259bn$ /4th q 2011:   9.93bn€=12.909bn$

source: We are involved with Billions in Italy & Spain (rtl.nl, Jul 6th 2012) 1€=1.30$,USD=own calculations

German GDP  3401.000bn$          4.81
Dutch GDP        706.955bn$               1    (both estimates 2012, Wikipedia)

NL > Cyprus

Dutch banks have 2 bn € in Cyprus (rtl.nl, Mar 22nd 2013)(Dutch)

NL > ALL
Rise in the Dutch financial sector's exposures to foreign private parties (text + charts) 
(Dutch Central Bank - DNB,Jun 28th)

GER > Spain
Der spanische Fall  (Deutschlandfunk, audio, Apr 19th 2013)
State of Europe's Banks: Safe and Stressed (WSJ, Sept 24th 2012)

Germany (banks in general)
German banks seek to shed over 600 bln euros in assets (Reuters, May 7th 2013) (via @cigolo)

Greece > Cyprus
Greek exposure to Cyprus: the unintended consequences of restructuring (Bruegel.org, Aug 13th 2013)
(via @rvazfer)

[/update]


note: some more detailed data of eurozone's cross country exposures might get added later