UPDATE 4-Dutch govt to inject 3 bln euros into ABN AMRO

* Will raise govt debt by 0.5 percent of GDP or more

* Sale to Deutsche Bank worth 700 mln euros

* Deutsche deal must close by Dec. 31

(Adds analyst comments, background, details)

By Ben Berkowitz and Gilbert Kreijger

AMSTERDAM/THE HAGUE, Nov 19 (Reuters) - The Dutch government said it would have to inject another 3 billion euros ($4.5 billion) into nationalised bank ABN AMRO [ABNNV.UL], raising the national debt with no immediate return for the state.

The finance ministry also said on Thursday that a long-negotiated ABN asset sale to Deutsche Bank (DBKGn.DE) was worth 700 million euros, but could collapse unless parliament approves it by Dec. 31. Deutsche Bank declined to comment.

The government has now committed more than 23 billion euros in the last 13 months to ABN AMRO and the nationalisation process, making it one of the world's costliest bailouts since the financial crisis began.

The state took control of the local operations of Fortis (FOR.BR), including ABN AMRO, for 16.8 billion euros in October 2008, a year after a consortium including Fortis and Royal Bank of Scotland (RBS.L) bought ABN.